Finding the Third Proportional to 11,000 and 21,449

Step by Step Solution

1. Step 1: Write the proportion equation
   11,000 : 21,449 = 21,449 : x
2. Step 2: Convert to fraction form
   11,000/21,449 = 21,449/x
3. Step 3: Cross multiply
   11,000x = 21,449 × 21,449
4. Step 4: Simplify right side
   11,000x = 460,059,601
5. Step 5: Solve for x
   x = 460,059,601/11,000
6. Step 6: Final answer
   x = 41,823.60