Finding the Third Proportional to 111,219.50 and 239,934

Step by Step Solution

1. Step 1: Write the proportion equation
   111,219.50 : 239,934 = 239,934 : x
2. Step 2: Convert to fraction form
   111,219.50/239,934 = 239,934/x
3. Step 3: Cross multiply
   111,219.50x = 239,934 × 239,934
4. Step 4: Simplify right side
   111,219.50x = 57,568,324,356
5. Step 5: Solve for x
   x = 57,568,324,356/111,219.50
6. Step 6: Final answer
   x = 517,609.99