Finding the Third Proportional to 31,140.50 and 67,465

Step by Step Solution

1. Step 1: Write the proportion equation
   31,140.50 : 67,465 = 67,465 : x
2. Step 2: Convert to fraction form
   31,140.50/67,465 = 67,465/x
3. Step 3: Cross multiply
   31,140.50x = 67,465 × 67,465
4. Step 4: Simplify right side
   31,140.50x = 4,551,526,225
5. Step 5: Solve for x
   x = 4,551,526,225/31,140.50
6. Step 6: Final answer
   x = 146,160.99