Finding the Third Proportional to 243,705 and 363,528

Step by Step Solution

1. Step 1: Write the proportion equation
   243,705 : 363,528 = 363,528 : x
2. Step 2: Convert to fraction form
   243,705/363,528 = 363,528/x
3. Step 3: Cross multiply
   243,705x = 363,528 × 363,528
4. Step 4: Simplify right side
   243,705x = 132,152,606,784
5. Step 5: Solve for x
   x = 132,152,606,784/243,705
6. Step 6: Final answer
   x = 542,264.65