Finding the Third Proportional to 31,310,139 and 67,250,418

Step by Step Solution

1. Step 1: Write the proportion equation
   31,310,139 : 67,250,418 = 67,250,418 : x
2. Step 2: Convert to fraction form
   31,310,139/67,250,418 = 67,250,418/x
3. Step 3: Cross multiply
   31,310,139x = 67,250,418 × 67,250,418
4. Step 4: Simplify right side
   31,310,139x = 4,522,618,721,174,724
5. Step 5: Solve for x
   x = 4,522,618,721,174,724/31,310,139
6. Step 6: Final answer
   x = 144,445,820.61