Finding the Third Proportional to 10,131 and 20,928

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131 : 20,928 = 20,928 : x
2. Step 2: Convert to fraction form
   10,131/20,928 = 20,928/x
3. Step 3: Cross multiply
   10,131x = 20,928 × 20,928
4. Step 4: Simplify right side
   10,131x = 437,981,184
5. Step 5: Solve for x
   x = 437,981,184/10,131
6. Step 6: Final answer
   x = 43,231.78