Finding the Third Proportional to 43,042.50 and 71,129.25

Step by Step Solution

1. Step 1: Write the proportion equation
   43,042.50 : 71,129.25 = 71,129.25 : x
2. Step 2: Convert to fraction form
   43,042.50/71,129.25 = 71,129.25/x
3. Step 3: Cross multiply
   43,042.50x = 71,129.25 × 71,129.25
4. Step 4: Simplify right side
   43,042.50x = 5,059,370,205.56
5. Step 5: Solve for x
   x = 5,059,370,205.56/43,042.50
6. Step 6: Final answer
   x = 117,543.60