Finding the Third Proportional to 40,608 and 55,416

Step by Step Solution

1. Step 1: Write the proportion equation
   40,608 : 55,416 = 55,416 : x
2. Step 2: Convert to fraction form
   40,608/55,416 = 55,416/x
3. Step 3: Cross multiply
   40,608x = 55,416 × 55,416
4. Step 4: Simplify right side
   40,608x = 3,070,933,056
5. Step 5: Solve for x
   x = 3,070,933,056/40,608
6. Step 6: Final answer
   x = 75,623.84