Finding the Third Proportional to 109,309.50 and 239,058

Step by Step Solution

1. Step 1: Write the proportion equation
   109,309.50 : 239,058 = 239,058 : x
2. Step 2: Convert to fraction form
   109,309.50/239,058 = 239,058/x
3. Step 3: Cross multiply
   109,309.50x = 239,058 × 239,058
4. Step 4: Simplify right side
   109,309.50x = 57,148,727,364
5. Step 5: Solve for x
   x = 57,148,727,364/109,309.50
6. Step 6: Final answer
   x = 522,815.74