Finding the Third Proportional to 31,166.50 and 67,085

Step by Step Solution

1. Step 1: Write the proportion equation
   31,166.50 : 67,085 = 67,085 : x
2. Step 2: Convert to fraction form
   31,166.50/67,085 = 67,085/x
3. Step 3: Cross multiply
   31,166.50x = 67,085 × 67,085
4. Step 4: Simplify right side
   31,166.50x = 4,500,397,225
5. Step 5: Solve for x
   x = 4,500,397,225/31,166.50
6. Step 6: Final answer
   x = 144,398.54