Finding the Third Proportional to 648,225 and 981,280.50

Step by Step Solution

1. Step 1: Write the proportion equation
   648,225 : 981,280.50 = 981,280.50 : x
2. Step 2: Convert to fraction form
   648,225/981,280.50 = 981,280.50/x
3. Step 3: Cross multiply
   648,225x = 981,280.50 × 981,280.50
4. Step 4: Simplify right side
   648,225x = 962,911,419,680.25
5. Step 5: Solve for x
   x = 962,911,419,680.25/648,225
6. Step 6: Final answer
   x = 1,485,458.63