Finding the Third Proportional to 648,223 and 981,277.50

Step by Step Solution

1. Step 1: Write the proportion equation
   648,223 : 981,277.50 = 981,277.50 : x
2. Step 2: Convert to fraction form
   648,223/981,277.50 = 981,277.50/x
3. Step 3: Cross multiply
   648,223x = 981,277.50 × 981,277.50
4. Step 4: Simplify right side
   648,223x = 962,905,532,006.25
5. Step 5: Solve for x
   x = 962,905,532,006.25/648,223
6. Step 6: Final answer
   x = 1,485,454.13