Finding the Third Proportional to 647,385,018 and 946,499,535

Step by Step Solution

1. Step 1: Write the proportion equation
   647,385,018 : 946,499,535 = 946,499,535 : x
2. Step 2: Convert to fraction form
   647,385,018/946,499,535 = 946,499,535/x
3. Step 3: Cross multiply
   647,385,018x = 946,499,535 × 946,499,535
4. Step 4: Simplify right side
   647,385,018x = 895,861,369,755,216,256
5. Step 5: Solve for x
   x = 895,861,369,755,216,256/647,385,018
6. Step 6: Final answer
   x = 1,383,815,418.72