The solution to this puzzle can be achieved through simple division. A lot of you got this one correct, the solution was to realize that the first two numbers were related in that dividing the first by 2 resulted in the second.
In essence what this diagram shows is that you take 712 and divide it by 2 which gives you 356. Following suite, you would take 356 and divide it by 2 leaving you with 178. Well done to you all! I will make the next puzzle the same difficulty, this seems to be a reasonable level to figure out.