Finding the Third Proportional to 159,720 and 239,584.50

Step by Step Solution

1. Step 1: Write the proportion equation
   159,720 : 239,584.50 = 239,584.50 : x
2. Step 2: Convert to fraction form
   159,720/239,584.50 = 239,584.50/x
3. Step 3: Cross multiply
   159,720x = 239,584.50 × 239,584.50
4. Step 4: Simplify right side
   159,720x = 57,400,732,640.25
5. Step 5: Solve for x
   x = 57,400,732,640.25/159,720
6. Step 6: Final answer
   x = 359,383.50