Finding the Third Proportional to 31,488,912 and 51,418,557

Step by Step Solution

1. Step 1: Write the proportion equation
   31,488,912 : 51,418,557 = 51,418,557 : x
2. Step 2: Convert to fraction form
   31,488,912/51,418,557 = 51,418,557/x
3. Step 3: Cross multiply
   31,488,912x = 51,418,557 × 51,418,557
4. Step 4: Simplify right side
   31,488,912x = 2,643,868,003,962,249
5. Step 5: Solve for x
   x = 2,643,868,003,962,249/31,488,912
6. Step 6: Final answer
   x = 83,961,872.17