Finding the Third Proportional to 31,302.50 and 67,912.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,302.50 : 67,912.75 = 67,912.75 : x
2. Step 2: Convert to fraction form
   31,302.50/67,912.75 = 67,912.75/x
3. Step 3: Cross multiply
   31,302.50x = 67,912.75 × 67,912.75
4. Step 4: Simplify right side
   31,302.50x = 4,612,141,612.56
5. Step 5: Solve for x
   x = 4,612,141,612.56/31,302.50
6. Step 6: Final answer
   x = 147,341.00