Finding the Third Proportional to 271,326 and 399,151.50

Step by Step Solution

1. Step 1: Write the proportion equation
   271,326 : 399,151.50 = 399,151.50 : x
2. Step 2: Convert to fraction form
   271,326/399,151.50 = 399,151.50/x
3. Step 3: Cross multiply
   271,326x = 399,151.50 × 399,151.50
4. Step 4: Simplify right side
   271,326x = 159,321,919,952.25
5. Step 5: Solve for x
   x = 159,321,919,952.25/271,326
6. Step 6: Final answer
   x = 587,197.39