Finding the Third Proportional to 621,229.50 and 981,902.25

Step by Step Solution

1. Step 1: Write the proportion equation
   621,229.50 : 981,902.25 = 981,902.25 : x
2. Step 2: Convert to fraction form
   621,229.50/981,902.25 = 981,902.25/x
3. Step 3: Cross multiply
   621,229.50x = 981,902.25 × 981,902.25
4. Step 4: Simplify right side
   621,229.50x = 964,132,028,555.06
5. Step 5: Solve for x
   x = 964,132,028,555.06/621,229.50
6. Step 6: Final answer
   x = 1,551,973.99