Finding the Third Proportional to 42,288.75 and 65,448

Step by Step Solution

1. Step 1: Write the proportion equation
   42,288.75 : 65,448 = 65,448 : x
2. Step 2: Convert to fraction form
   42,288.75/65,448 = 65,448/x
3. Step 3: Cross multiply
   42,288.75x = 65,448 × 65,448
4. Step 4: Simplify right side
   42,288.75x = 4,283,440,704
5. Step 5: Solve for x
   x = 4,283,440,704/42,288.75
6. Step 6: Final answer
   x = 101,290.31