Finding the Third Proportional to 315,056.25 and 479,155.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,056.25 : 479,155.50 = 479,155.50 : x
2. Step 2: Convert to fraction form
   315,056.25/479,155.50 = 479,155.50/x
3. Step 3: Cross multiply
   315,056.25x = 479,155.50 × 479,155.50
4. Step 4: Simplify right side
   315,056.25x = 229,589,993,180.25
5. Step 5: Solve for x
   x = 229,589,993,180.25/315,056.25
6. Step 6: Final answer
   x = 728,726.99