Finding the Third Proportional to 399,793.50 and 863,604

Step by Step Solution

1. Step 1: Write the proportion equation
   399,793.50 : 863,604 = 863,604 : x
2. Step 2: Convert to fraction form
   399,793.50/863,604 = 863,604/x
3. Step 3: Cross multiply
   399,793.50x = 863,604 × 863,604
4. Step 4: Simplify right side
   399,793.50x = 745,811,868,816
5. Step 5: Solve for x
   x = 745,811,868,816/399,793.50
6. Step 6: Final answer
   x = 1,865,492.73