Finding the Third Proportional to 31,900,648 and 69,977,331

Step by Step Solution

1. Step 1: Write the proportion equation
   31,900,648 : 69,977,331 = 69,977,331 : x
2. Step 2: Convert to fraction form
   31,900,648/69,977,331 = 69,977,331/x
3. Step 3: Cross multiply
   31,900,648x = 69,977,331 × 69,977,331
4. Step 4: Simplify right side
   31,900,648x = 4,896,826,853,883,561
5. Step 5: Solve for x
   x = 4,896,826,853,883,561/31,900,648
6. Step 6: Final answer
   x = 153,502,425.84