Finding the Third Proportional to 271,435 and 399,043.50

Step by Step Solution

1. Step 1: Write the proportion equation
   271,435 : 399,043.50 = 399,043.50 : x
2. Step 2: Convert to fraction form
   271,435/399,043.50 = 399,043.50/x
3. Step 3: Cross multiply
   271,435x = 399,043.50 × 399,043.50
4. Step 4: Simplify right side
   271,435x = 159,235,714,892.25
5. Step 5: Solve for x
   x = 159,235,714,892.25/271,435
6. Step 6: Final answer
   x = 586,644.00