5 \cdot 10^5 is how many times as large as 1\cdot10^5

To find out how many times (5 \cdot 10^5) is larger than (1 \cdot 10^5), you can divide the two values:

[ \frac{5 \cdot 10^5}{1 \cdot 10^5} ]

This simplifies to:

[ \frac{5}{1} \cdot \frac{10^5}{10^5} = 5 \cdot 1 = 5 ]

Therefore, (5 \cdot 10^5) is 5 times as large as (1 \cdot 10^5).