Finding the Third Proportional to 41,431.50 and 71,340.75

Step by Step Solution

1. Step 1: Write the proportion equation
   41,431.50 : 71,340.75 = 71,340.75 : x
2. Step 2: Convert to fraction form
   41,431.50/71,340.75 = 71,340.75/x
3. Step 3: Cross multiply
   41,431.50x = 71,340.75 × 71,340.75
4. Step 4: Simplify right side
   41,431.50x = 5,089,502,610.56
5. Step 5: Solve for x
   x = 5,089,502,610.56/41,431.50
6. Step 6: Final answer
   x = 122,841.38