Finding the Third Proportional to 111,744 and 243,168

Step by Step Solution

1. Step 1: Write the proportion equation
   111,744 : 243,168 = 243,168 : x
2. Step 2: Convert to fraction form
   111,744/243,168 = 243,168/x
3. Step 3: Cross multiply
   111,744x = 243,168 × 243,168
4. Step 4: Simplify right side
   111,744x = 59,130,676,224
5. Step 5: Solve for x
   x = 59,130,676,224/111,744
6. Step 6: Final answer
   x = 529,161.98