Finding the Third Proportional to 31,835,620 and 68,213,720

Step by Step Solution

1. Step 1: Write the proportion equation
   31,835,620 : 68,213,720 = 68,213,720 : x
2. Step 2: Convert to fraction form
   31,835,620/68,213,720 = 68,213,720/x
3. Step 3: Cross multiply
   31,835,620x = 68,213,720 × 68,213,720
4. Step 4: Simplify right side
   31,835,620x = 4,653,111,596,238,400
5. Step 5: Solve for x
   x = 4,653,111,596,238,400/31,835,620
6. Step 6: Final answer
   x = 146,160,545.84