Finding the Third Proportional to 40,208 and 55,560

Step by Step Solution

1. Step 1: Write the proportion equation
   40,208 : 55,560 = 55,560 : x
2. Step 2: Convert to fraction form
   40,208/55,560 = 55,560/x
3. Step 3: Cross multiply
   40,208x = 55,560 × 55,560
4. Step 4: Simplify right side
   40,208x = 3,086,913,600
5. Step 5: Solve for x
   x = 3,086,913,600/40,208
6. Step 6: Final answer
   x = 76,773.62