Finding the Third Proportional to 31,788,396 and 68,658,651

Step by Step Solution

1. Step 1: Write the proportion equation
   31,788,396 : 68,658,651 = 68,658,651 : x
2. Step 2: Convert to fraction form
   31,788,396/68,658,651 = 68,658,651/x
3. Step 3: Cross multiply
   31,788,396x = 68,658,651 × 68,658,651
4. Step 4: Simplify right side
   31,788,396x = 4,714,010,357,139,801
5. Step 5: Solve for x
   x = 4,714,010,357,139,801/31,788,396
6. Step 6: Final answer
   x = 148,293,432.52