Finding the Third Proportional to 31,606.88 and 67,311

Step by Step Solution

1. Step 1: Write the proportion equation
   31,606.88 : 67,311 = 67,311 : x
2. Step 2: Convert to fraction form
   31,606.88/67,311 = 67,311/x
3. Step 3: Cross multiply
   31,606.88x = 67,311 × 67,311
4. Step 4: Simplify right side
   31,606.88x = 4,530,770,721
5. Step 5: Solve for x
   x = 4,530,770,721/31,606.88
6. Step 6: Final answer
   x = 143,347.63