Finding the Third Proportional to 113,215.50 and 239,904

Step by Step Solution

1. Step 1: Write the proportion equation
   113,215.50 : 239,904 = 239,904 : x
2. Step 2: Convert to fraction form
   113,215.50/239,904 = 239,904/x
3. Step 3: Cross multiply
   113,215.50x = 239,904 × 239,904
4. Step 4: Simplify right side
   113,215.50x = 57,553,929,216
5. Step 5: Solve for x
   x = 57,553,929,216/113,215.50
6. Step 6: Final answer
   x = 508,357.33