Finding the Third Proportional to 71,215.50 and 110,708.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,215.50 : 110,708.50 = 110,708.50 : x
2. Step 2: Convert to fraction form
   71,215.50/110,708.50 = 110,708.50/x
3. Step 3: Cross multiply
   71,215.50x = 110,708.50 × 110,708.50
4. Step 4: Simplify right side
   71,215.50x = 12,256,371,972.25
5. Step 5: Solve for x
   x = 12,256,371,972.25/71,215.50
6. Step 6: Final answer
   x = 172,102.59