Finding the Third Proportional to 42,405 and 63,612

Step by Step Solution

1. Step 1: Write the proportion equation
   42,405 : 63,612 = 63,612 : x
2. Step 2: Convert to fraction form
   42,405/63,612 = 63,612/x
3. Step 3: Cross multiply
   42,405x = 63,612 × 63,612
4. Step 4: Simplify right side
   42,405x = 4,046,486,544
5. Step 5: Solve for x
   x = 4,046,486,544/42,405
6. Step 6: Final answer
   x = 95,424.75