Finding the Third Proportional to 361,800 and 531,859.50

Step by Step Solution

1. Step 1: Write the proportion equation
   361,800 : 531,859.50 = 531,859.50 : x
2. Step 2: Convert to fraction form
   361,800/531,859.50 = 531,859.50/x
3. Step 3: Cross multiply
   361,800x = 531,859.50 × 531,859.50
4. Step 4: Simplify right side
   361,800x = 282,874,527,740.25
5. Step 5: Solve for x
   x = 282,874,527,740.25/361,800
6. Step 6: Final answer
   x = 781,853.31