Finding the Third Proportional to 400,168.50 and 610,414.50

Step by Step Solution

1. Step 1: Write the proportion equation
   400,168.50 : 610,414.50 = 610,414.50 : x
2. Step 2: Convert to fraction form
   400,168.50/610,414.50 = 610,414.50/x
3. Step 3: Cross multiply
   400,168.50x = 610,414.50 × 610,414.50
4. Step 4: Simplify right side
   400,168.50x = 372,605,861,810.25
5. Step 5: Solve for x
   x = 372,605,861,810.25/400,168.50
6. Step 6: Final answer
   x = 931,122.42