Finding the Third Proportional to 271,179 and 387,400.50

Step by Step Solution

1. Step 1: Write the proportion equation
   271,179 : 387,400.50 = 387,400.50 : x
2. Step 2: Convert to fraction form
   271,179/387,400.50 = 387,400.50/x
3. Step 3: Cross multiply
   271,179x = 387,400.50 × 387,400.50
4. Step 4: Simplify right side
   271,179x = 150,079,147,400.25
5. Step 5: Solve for x
   x = 150,079,147,400.25/271,179
6. Step 6: Final answer
   x = 553,432.04