Finding the Third Proportional to 5,500 and 10,728

Step by Step Solution

1. Step 1: Write the proportion equation
   5,500 : 10,728 = 10,728 : x
2. Step 2: Convert to fraction form
   5,500/10,728 = 10,728/x
3. Step 3: Cross multiply
   5,500x = 10,728 × 10,728
4. Step 4: Simplify right side
   5,500x = 115,089,984
5. Step 5: Solve for x
   x = 115,089,984/5,500
6. Step 6: Final answer
   x = 20,925.45