Finding the Third Proportional to 111,432 and 243,192

Step by Step Solution

1. Step 1: Write the proportion equation
   111,432 : 243,192 = 243,192 : x
2. Step 2: Convert to fraction form
   111,432/243,192 = 243,192/x
3. Step 3: Cross multiply
   111,432x = 243,192 × 243,192
4. Step 4: Simplify right side
   111,432x = 59,142,348,864
5. Step 5: Solve for x
   x = 59,142,348,864/111,432
6. Step 6: Final answer
   x = 530,748.34