Finding the Third Proportional to 40,790 and 57,442

Step by Step Solution

1. Step 1: Write the proportion equation
   40,790 : 57,442 = 57,442 : x
2. Step 2: Convert to fraction form
   40,790/57,442 = 57,442/x
3. Step 3: Cross multiply
   40,790x = 57,442 × 57,442
4. Step 4: Simplify right side
   40,790x = 3,299,583,364
5. Step 5: Solve for x
   x = 3,299,583,364/40,790
6. Step 6: Final answer
   x = 80,891.97