Finding the Third Proportional to 39,639.75 and 61,391.25

Step by Step Solution

1. Step 1: Write the proportion equation
   39,639.75 : 61,391.25 = 61,391.25 : x
2. Step 2: Convert to fraction form
   39,639.75/61,391.25 = 61,391.25/x
3. Step 3: Cross multiply
   39,639.75x = 61,391.25 × 61,391.25
4. Step 4: Simplify right side
   39,639.75x = 3,768,885,576.56
5. Step 5: Solve for x
   x = 3,768,885,576.56/39,639.75
6. Step 6: Final answer
   x = 95,078.44