Finding the Third Proportional to 42,451 and 57,448

Step by Step Solution

1. Step 1: Write the proportion equation
   42,451 : 57,448 = 57,448 : x
2. Step 2: Convert to fraction form
   42,451/57,448 = 57,448/x
3. Step 3: Cross multiply
   42,451x = 57,448 × 57,448
4. Step 4: Simplify right side
   42,451x = 3,300,272,704
5. Step 5: Solve for x
   x = 3,300,272,704/42,451
6. Step 6: Final answer
   x = 77,743.11