Population of a city grow from 48000 in 1930 to 920000 person in 2010. Estimate the population in 2025. Type your answer... $\quad$

Step 1 ：Given that the population of a city grew from 48000 in 1930 to 920000 in 2010, we are asked to estimate the population in 2025.

Step 2 ：First, we calculate the rate of growth per year from 1930 to 2010. This is done by subtracting the population in 1930 from the population in 2010, and then dividing by the number of years between 1930 and 2010. In mathematical terms, this is \(\frac{920000 - 48000}{2010 - 1930} = 10900.0\) people per year.

Step 3 ：Next, we use this growth rate to estimate the population in 2025. We multiply the growth rate by the number of years from 2010 to 2025, and then add this to the population in 2010. In mathematical terms, this is \(920000 + 10900.0 \times (2025 - 2010) = 1083500.0\).

Step 4 ：Final Answer: The estimated population of the city in 2025 is \(\boxed{1083500}\).