Finding the Third Proportional to 9,904 and 21,517

Step by Step Solution

1. Step 1: Write the proportion equation
   9,904 : 21,517 = 21,517 : x
2. Step 2: Convert to fraction form
   9,904/21,517 = 21,517/x
3. Step 3: Cross multiply
   9,904x = 21,517 × 21,517
4. Step 4: Simplify right side
   9,904x = 462,981,289
5. Step 5: Solve for x
   x = 462,981,289/9,904
6. Step 6: Final answer
   x = 46,746.90