Finding the Third Proportional to 40,779.38 and 57,425.63

Step by Step Solution

1. Step 1: Write the proportion equation
   40,779.38 : 57,425.63 = 57,425.63 : x
2. Step 2: Convert to fraction form
   40,779.38/57,425.63 = 57,425.63/x
3. Step 3: Cross multiply
   40,779.38x = 57,425.63 × 57,425.63
4. Step 4: Simplify right side
   40,779.38x = 3,297,702,406.64
5. Step 5: Solve for x
   x = 3,297,702,406.64/40,779.38
6. Step 6: Final answer
   x = 80,866.92