Finding the Third Proportional to 172,938 and 267,079.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,938 : 267,079.50 = 267,079.50 : x
2. Step 2: Convert to fraction form
   172,938/267,079.50 = 267,079.50/x
3. Step 3: Cross multiply
   172,938x = 267,079.50 × 267,079.50
4. Step 4: Simplify right side
   172,938x = 71,331,459,320.25
5. Step 5: Solve for x
   x = 71,331,459,320.25/172,938
6. Step 6: Final answer
   x = 412,468.40