Finding the Third Proportional to 71,143.50 and 103,042.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,143.50 : 103,042.50 = 103,042.50 : x
2. Step 2: Convert to fraction form
   71,143.50/103,042.50 = 103,042.50/x
3. Step 3: Cross multiply
   71,143.50x = 103,042.50 × 103,042.50
4. Step 4: Simplify right side
   71,143.50x = 10,617,756,806.25
5. Step 5: Solve for x
   x = 10,617,756,806.25/71,143.50
6. Step 6: Final answer
   x = 149,244.23