Finding the Third Proportional to 648,207 and 981,253.50

Step by Step Solution

1. Step 1: Write the proportion equation
   648,207 : 981,253.50 = 981,253.50 : x
2. Step 2: Convert to fraction form
   648,207/981,253.50 = 981,253.50/x
3. Step 3: Cross multiply
   648,207x = 981,253.50 × 981,253.50
4. Step 4: Simplify right side
   648,207x = 962,858,431,262.25
5. Step 5: Solve for x
   x = 962,858,431,262.25/648,207
6. Step 6: Final answer
   x = 1,485,418.13