Finding the Third Proportional to 9,912 and 20,928

Step by Step Solution

1. Step 1: Write the proportion equation
   9,912 : 20,928 = 20,928 : x
2. Step 2: Convert to fraction form
   9,912/20,928 = 20,928/x
3. Step 3: Cross multiply
   9,912x = 20,928 × 20,928
4. Step 4: Simplify right side
   9,912x = 437,981,184
5. Step 5: Solve for x
   x = 437,981,184/9,912
6. Step 6: Final answer
   x = 44,186.96