Finding the Third Proportional to 9,998 and 21,908

Step by Step Solution

1. Step 1: Write the proportion equation
   9,998 : 21,908 = 21,908 : x
2. Step 2: Convert to fraction form
   9,998/21,908 = 21,908/x
3. Step 3: Cross multiply
   9,998x = 21,908 × 21,908
4. Step 4: Simplify right side
   9,998x = 479,960,464
5. Step 5: Solve for x
   x = 479,960,464/9,998
6. Step 6: Final answer
   x = 48,005.65