Finding the Third Proportional to 109,462.50 and 239,688

Step by Step Solution

1. Step 1: Write the proportion equation
   109,462.50 : 239,688 = 239,688 : x
2. Step 2: Convert to fraction form
   109,462.50/239,688 = 239,688/x
3. Step 3: Cross multiply
   109,462.50x = 239,688 × 239,688
4. Step 4: Simplify right side
   109,462.50x = 57,450,337,344
5. Step 5: Solve for x
   x = 57,450,337,344/109,462.50
6. Step 6: Final answer
   x = 524,840.35