Finding the Third Proportional to 99,446,535 and 216,957,123

Step by Step Solution

1. Step 1: Write the proportion equation
   99,446,535 : 216,957,123 = 216,957,123 : x
2. Step 2: Convert to fraction form
   99,446,535/216,957,123 = 216,957,123/x
3. Step 3: Cross multiply
   99,446,535x = 216,957,123 × 216,957,123
4. Step 4: Simplify right side
   99,446,535x = 47,070,393,220,437,128
5. Step 5: Solve for x
   x = 47,070,393,220,437,128/99,446,535
6. Step 6: Final answer
   x = 473,323,612.74