Finding the Third Proportional to 9,728 and 21,339

Step by Step Solution

1. Step 1: Write the proportion equation
   9,728 : 21,339 = 21,339 : x
2. Step 2: Convert to fraction form
   9,728/21,339 = 21,339/x
3. Step 3: Cross multiply
   9,728x = 21,339 × 21,339
4. Step 4: Simplify right side
   9,728x = 455,352,921
5. Step 5: Solve for x
   x = 455,352,921/9,728
6. Step 6: Final answer
   x = 46,808.48