What did Ra mean by...?

[Aaron]

"power upon power greater" means take the power of the need of the past and multiply it by itself at least twice, and that equals the need at the time of channeling.

That's interesting. So, would you say that saying "even as the need is powering upon power greater" is the same thing as what Ra said?

That doesn't really make much sense. "Powering" as a verb means to provide power. And "upon power greater" is not an object or idea or system which can be powered.