To find out how many more people live in China than in India, you can subtract India's population from China's population.
China's population: \(1.45 \times 10^9 = 1,450,000,000\)
India's population: \(1,400,000,000\)
Now, let's do the subtraction:
\[ 1,450,000,000 - 1,400,000,000 = 50,000,000 \]
Now, we can express \(50,000,000\) in scientific notation:
\[ 50,000,000 = 5 \times 10^7 \]
So, the answer is:
5 * 10 ^ 7.