Finding the Third Proportional to 109,610 and 239,078

Step by Step Solution

1. Step 1: Write the proportion equation
   109,610 : 239,078 = 239,078 : x
2. Step 2: Convert to fraction form
   109,610/239,078 = 239,078/x
3. Step 3: Cross multiply
   109,610x = 239,078 × 239,078
4. Step 4: Simplify right side
   109,610x = 57,158,290,084
5. Step 5: Solve for x
   x = 57,158,290,084/109,610
6. Step 6: Final answer
   x = 521,469.67