Finding the Third Proportional to 111,168 and 243,418

Step by Step Solution

1. Step 1: Write the proportion equation
   111,168 : 243,418 = 243,418 : x
2. Step 2: Convert to fraction form
   111,168/243,418 = 243,418/x
3. Step 3: Cross multiply
   111,168x = 243,418 × 243,418
4. Step 4: Simplify right side
   111,168x = 59,252,322,724
5. Step 5: Solve for x
   x = 59,252,322,724/111,168
6. Step 6: Final answer
   x = 532,998.01