Finding the Third Proportional to 243,391 and 363,060

Step by Step Solution

1. Step 1: Write the proportion equation
   243,391 : 363,060 = 363,060 : x
2. Step 2: Convert to fraction form
   243,391/363,060 = 363,060/x
3. Step 3: Cross multiply
   243,391x = 363,060 × 363,060
4. Step 4: Simplify right side
   243,391x = 131,812,563,600
5. Step 5: Solve for x
   x = 131,812,563,600/243,391
6. Step 6: Final answer
   x = 541,567.12