Finding the Third Proportional to 543,016.50 and 813,477

Step by Step Solution

1. Step 1: Write the proportion equation
   543,016.50 : 813,477 = 813,477 : x
2. Step 2: Convert to fraction form
   543,016.50/813,477 = 813,477/x
3. Step 3: Cross multiply
   543,016.50x = 813,477 × 813,477
4. Step 4: Simplify right side
   543,016.50x = 661,744,829,529
5. Step 5: Solve for x
   x = 661,744,829,529/543,016.50
6. Step 6: Final answer
   x = 1,218,645.90