Absolutely not the other way around, no. Midi-chlorians are a symbiotic lifeform that live in harmony with the environment around them; they could not possibly create that environment in the first place.
If someone has Force Potential, this will be shown by the large amounts of Midi-Chlorians that have become resident in his or her body, attracted by said potential.
Not only is this explnation in keeping with the natural basis GL used for their idea, if it uis the other way around you get stipid scenarios in which people think injecting people with MCs will give you Force powers, or silly stuff like that.
No. The MCs are a symptom, not a cause- but Force potential is useless without them.