How much greater is 72.4×10^7 than 7.9×10^5 ? Express your answer using either standard notation or scientific notation.
First, convert both numbers to standard notation:
72.4×10^7 = 724,000,000
7.9×10^5 = 790,000
Now, find the difference:
724,000,000 - 790,000 = 723,210,000
Therefore, 72.4×10^7 is 723,210,000 greater than 7.9×10^5.