Finding the Third Proportional to 485,604.50 and 990,469

Step by Step Solution

1. Step 1: Write the proportion equation
   485,604.50 : 990,469 = 990,469 : x
2. Step 2: Convert to fraction form
   485,604.50/990,469 = 990,469/x
3. Step 3: Cross multiply
   485,604.50x = 990,469 × 990,469
4. Step 4: Simplify right side
   485,604.50x = 981,028,839,961
5. Step 5: Solve for x
   x = 981,028,839,961/485,604.50
6. Step 6: Final answer
   x = 2,020,221.89