Finding the Third Proportional to 91,749.50 and 140,540

Step by Step Solution

1. Step 1: Write the proportion equation
   91,749.50 : 140,540 = 140,540 : x
2. Step 2: Convert to fraction form
   91,749.50/140,540 = 140,540/x
3. Step 3: Cross multiply
   91,749.50x = 140,540 × 140,540
4. Step 4: Simplify right side
   91,749.50x = 19,751,491,600
5. Step 5: Solve for x
   x = 19,751,491,600/91,749.50
6. Step 6: Final answer
   x = 215,276.29