Finding the Third Proportional to 411,442.50 and 545,940

Step by Step Solution

1. Step 1: Write the proportion equation
   411,442.50 : 545,940 = 545,940 : x
2. Step 2: Convert to fraction form
   411,442.50/545,940 = 545,940/x
3. Step 3: Cross multiply
   411,442.50x = 545,940 × 545,940
4. Step 4: Simplify right side
   411,442.50x = 298,050,483,600
5. Step 5: Solve for x
   x = 298,050,483,600/411,442.50
6. Step 6: Final answer
   x = 724,403.73