Finding the Third Proportional to 111,168 and 243,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,168 : 243,418.50 = 243,418.50 : x
2. Step 2: Convert to fraction form
   111,168/243,418.50 = 243,418.50/x
3. Step 3: Cross multiply
   111,168x = 243,418.50 × 243,418.50
4. Step 4: Simplify right side
   111,168x = 59,252,566,142.25
5. Step 5: Solve for x
   x = 59,252,566,142.25/111,168
6. Step 6: Final answer
   x = 533,000.20