Finding the Third Proportional to 42,453 and 57,450

Step by Step Solution

1. Step 1: Write the proportion equation
   42,453 : 57,450 = 57,450 : x
2. Step 2: Convert to fraction form
   42,453/57,450 = 57,450/x
3. Step 3: Cross multiply
   42,453x = 57,450 × 57,450
4. Step 4: Simplify right side
   42,453x = 3,300,502,500
5. Step 5: Solve for x
   x = 3,300,502,500/42,453
6. Step 6: Final answer
   x = 77,744.86