Finding the Third Proportional to 4,878 and 10,404

Step by Step Solution

1. Step 1: Write the proportion equation
   4,878 : 10,404 = 10,404 : x
2. Step 2: Convert to fraction form
   4,878/10,404 = 10,404/x
3. Step 3: Cross multiply
   4,878x = 10,404 × 10,404
4. Step 4: Simplify right side
   4,878x = 108,243,216
5. Step 5: Solve for x
   x = 108,243,216/4,878
6. Step 6: Final answer
   x = 22,190.08