Finding the Third Proportional to 109,612 and 239,061

Step by Step Solution

1. Step 1: Write the proportion equation
   109,612 : 239,061 = 239,061 : x
2. Step 2: Convert to fraction form
   109,612/239,061 = 239,061/x
3. Step 3: Cross multiply
   109,612x = 239,061 × 239,061
4. Step 4: Simplify right side
   109,612x = 57,150,161,721
5. Step 5: Solve for x
   x = 57,150,161,721/109,612
6. Step 6: Final answer
   x = 521,386.00