Finding the Third Proportional to 10,998 and 21,447

Step by Step Solution

1. Step 1: Write the proportion equation
   10,998 : 21,447 = 21,447 : x
2. Step 2: Convert to fraction form
   10,998/21,447 = 21,447/x
3. Step 3: Cross multiply
   10,998x = 21,447 × 21,447
4. Step 4: Simplify right side
   10,998x = 459,973,809
5. Step 5: Solve for x
   x = 459,973,809/10,998
6. Step 6: Final answer
   x = 41,823.41