How to create a long progression in maple (up to 100 000 000 000), where a member is a previous one plus a certain number. For example: 25, 50, 75, 100... and then divide the whole series (all the members) by a number. What command should one use?

Is it possible to determine using maple both the exponents x and y, if only the value of n is known in the formula 3^x/2^y=n?

Sorry. I forgot to add that n is more than 1 and less than 2. For example 1.002 090 314 041, 1. 977 205 095 and the like.

Lets take 3^359/2^569 = 1.001 066 461 508 586.  Suppose we do not know the exponents 359 and 569.  Is it possible somehow deduce them from n = 1.001 066 461 508 586?