Finding the Third Proportional to 111,676.50 and 243,432

Step by Step Solution

1. Step 1: Write the proportion equation
   111,676.50 : 243,432 = 243,432 : x
2. Step 2: Convert to fraction form
   111,676.50/243,432 = 243,432/x
3. Step 3: Cross multiply
   111,676.50x = 243,432 × 243,432
4. Step 4: Simplify right side
   111,676.50x = 59,259,138,624
5. Step 5: Solve for x
   x = 59,259,138,624/111,676.50
6. Step 6: Final answer
   x = 530,632.13