Finding the Third Proportional to 271,350 and 398,900.25

Step by Step Solution

1. Step 1: Write the proportion equation
   271,350 : 398,900.25 = 398,900.25 : x
2. Step 2: Convert to fraction form
   271,350/398,900.25 = 398,900.25/x
3. Step 3: Cross multiply
   271,350x = 398,900.25 × 398,900.25
4. Step 4: Simplify right side
   271,350x = 159,121,409,450.06
5. Step 5: Solve for x
   x = 159,121,409,450.06/271,350
6. Step 6: Final answer
   x = 586,406.52