Hey there!
Here is your answer:
The proper answer to this question is "2×10^6".
Reason:
Translate these equations in standard from:
2×10^6=2,000,000
9×10^5=900,000
2,000,000≥900,000
Therefore 2×10^6 is greater!
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit