Finding the Third Proportional to 547,123.50 and 818,496

Step by Step Solution

1. Step 1: Write the proportion equation
   547,123.50 : 818,496 = 818,496 : x
2. Step 2: Convert to fraction form
   547,123.50/818,496 = 818,496/x
3. Step 3: Cross multiply
   547,123.50x = 818,496 × 818,496
4. Step 4: Simplify right side
   547,123.50x = 669,935,702,016
5. Step 5: Solve for x
   x = 669,935,702,016/547,123.50
6. Step 6: Final answer
   x = 1,224,468.89