Finding the Third Proportional to 383,627.25 and 558,571.50

Step by Step Solution

1. Step 1: Write the proportion equation
   383,627.25 : 558,571.50 = 558,571.50 : x
2. Step 2: Convert to fraction form
   383,627.25/558,571.50 = 558,571.50/x
3. Step 3: Cross multiply
   383,627.25x = 558,571.50 × 558,571.50
4. Step 4: Simplify right side
   383,627.25x = 312,002,120,612.25
5. Step 5: Solve for x
   x = 312,002,120,612.25/383,627.25
6. Step 6: Final answer
   x = 813,294.99