Finding the Third Proportional to 31,425,720 and 67,654,272

Step by Step Solution

1. Step 1: Write the proportion equation
   31,425,720 : 67,654,272 = 67,654,272 : x
2. Step 2: Convert to fraction form
   31,425,720/67,654,272 = 67,654,272/x
3. Step 3: Cross multiply
   31,425,720x = 67,654,272 × 67,654,272
4. Step 4: Simplify right side
   31,425,720x = 4,577,100,519,849,984
5. Step 5: Solve for x
   x = 4,577,100,519,849,984/31,425,720
6. Step 6: Final answer
   x = 145,648,230.81