Finding the Third Proportional to 729,020 and 981,400.50

Step by Step Solution

1. Step 1: Write the proportion equation
   729,020 : 981,400.50 = 981,400.50 : x
2. Step 2: Convert to fraction form
   729,020/981,400.50 = 981,400.50/x
3. Step 3: Cross multiply
   729,020x = 981,400.50 × 981,400.50
4. Step 4: Simplify right side
   729,020x = 963,146,941,400.25
5. Step 5: Solve for x
   x = 963,146,941,400.25/729,020
6. Step 6: Final answer
   x = 1,321,152.97