Finding the Third Proportional to 31,134.38 and 67,498.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,134.38 : 67,498.31 = 67,498.31 : x
2. Step 2: Convert to fraction form
   31,134.38/67,498.31 = 67,498.31/x
3. Step 3: Cross multiply
   31,134.38x = 67,498.31 × 67,498.31
4. Step 4: Simplify right side
   31,134.38x = 4,556,022,190.35
5. Step 5: Solve for x
   x = 4,556,022,190.35/31,134.38
6. Step 6: Final answer
   x = 146,334.15