Is this prophecy fulfilled? I would ask, why not? In 1976, President Spencer W. Kimball promised a temple in Paris, but suggested it might come only if the people there clenched their fists and ground their teeth. He also suggested church membership there would double, and even quadruple.
The church membership in France was about 10,000 then. Now? Almost 40,000.
President Gordon B. Hinckley in the 1990s asked the members there to pray that the church might find a site, for finding a site was proving difficult. I do not know how much opposition to the temple there was, but it becomes one of the few temples without a spire, due to height restrictions. Anticipation of the temple through the years has been high, but no temple came until now. I would guess it has been the most significant city in the world without a temple.
All these years later, then, after clenching of fists and grinding of teeth -- figuratively speaking -- Paris finally has a temple.