Depending on what you mean by 'flourish', but I think France meets any reasonable standard for a flourishing state. Since the French Revolution France has consistently been one of the world's most powerful states (briefly the most powerful during the Napoleonic wars) and has experienced very high standards of living. This is to say nothing of the contributions that the French state has made on a global scale to science, the arts, etc.

I don't want to appear as an apologist for the French state, and it obviously hasn't all been good times. France has experienced both significant domestic turmoil (1848, 1968) and military defeat (1870, 1940). But I don't think this alone can disqualify it from being a successful state, because if it did, we would have to also discount the USA (The Civil War) and Germany (1945), which most people would probably agree are 'flourishing'. France is still one of the best places in the world to live in terms of standard of living, access to healthcare, infrastructure etc etc, and has been since the Revolution.

I think it can be safely said that France has been a successful state in the wake of its revolution. It's not the only one but it is the one I am most familiar with.

Sources: France - the bourgeois years, 1815-1914, by Roger Magraw, France - 1915-1983, by Douglas Johnson