Finding the Third Proportional to 398,751.61 and 605,500.00

Step by Step Solution

1. Step 1: Write the proportion equation
   398,751.61 : 605,500.00 = 605,500.00 : x
2. Step 2: Convert to fraction form
   398,751.61/605,500.00 = 605,500.00/x
3. Step 3: Cross multiply
   398,751.61x = 605,500.00 × 605,500.00
4. Step 4: Simplify right side
   398,751.61x = 366,630,245,269.53
5. Step 5: Solve for x
   x = 366,630,245,269.53/398,751.61
6. Step 6: Final answer
   x = 919,445.18