Finding the Third Proportional to 5,105.50 and 10,427

Step by Step Solution

1. Step 1: Write the proportion equation
   5,105.50 : 10,427 = 10,427 : x
2. Step 2: Convert to fraction form
   5,105.50/10,427 = 10,427/x
3. Step 3: Cross multiply
   5,105.50x = 10,427 × 10,427
4. Step 4: Simplify right side
   5,105.50x = 108,722,329
5. Step 5: Solve for x
   x = 108,722,329/5,105.50
6. Step 6: Final answer
   x = 21,295.14