Finding the Third Proportional to 31,788,385 and 68,658,626

Step by Step Solution

1. Step 1: Write the proportion equation
   31,788,385 : 68,658,626 = 68,658,626 : x
2. Step 2: Convert to fraction form
   31,788,385/68,658,626 = 68,658,626/x
3. Step 3: Cross multiply
   31,788,385x = 68,658,626 × 68,658,626
4. Step 4: Simplify right side
   31,788,385x = 4,714,006,924,207,876
5. Step 5: Solve for x
   x = 4,714,006,924,207,876/31,788,385
6. Step 6: Final answer
   x = 148,293,375.84