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If you mean European provinces, England normally eventually gets one in Anglia and one appears in the Netherlands soon after it forms. Otherwise, you have to hope for a very rare random event.

In colonies, they usually form in the most populous colony of a region and quite a few appear around the globe.
 
Hm I must be one of those lucky bastards.
As sweden i colonized hanoi south of china in the beginning of the 18th century. A while after I had colonized the rest of indo-china and india a tarde center appeared in hanoi, and the trade value was around 2.2k. I feel good...