Finding the Third Proportional to 109,210 and 239,456

Step by Step Solution

1. Step 1: Write the proportion equation
   109,210 : 239,456 = 239,456 : x
2. Step 2: Convert to fraction form
   109,210/239,456 = 239,456/x
3. Step 3: Cross multiply
   109,210x = 239,456 × 239,456
4. Step 4: Simplify right side
   109,210x = 57,339,175,936
5. Step 5: Solve for x
   x = 57,339,175,936/109,210
6. Step 6: Final answer
   x = 525,035.95