Finding the Third Proportional to 262,281 and 398,545.50

Step by Step Solution

1. Step 1: Write the proportion equation
   262,281 : 398,545.50 = 398,545.50 : x
2. Step 2: Convert to fraction form
   262,281/398,545.50 = 398,545.50/x
3. Step 3: Cross multiply
   262,281x = 398,545.50 × 398,545.50
4. Step 4: Simplify right side
   262,281x = 158,838,515,570.25
5. Step 5: Solve for x
   x = 158,838,515,570.25/262,281
6. Step 6: Final answer
   x = 605,604.35