Finding the Third Proportional to 10,449 and 21,759

Step by Step Solution

1. Step 1: Write the proportion equation
   10,449 : 21,759 = 21,759 : x
2. Step 2: Convert to fraction form
   10,449/21,759 = 21,759/x
3. Step 3: Cross multiply
   10,449x = 21,759 × 21,759
4. Step 4: Simplify right side
   10,449x = 473,454,081
5. Step 5: Solve for x
   x = 473,454,081/10,449
6. Step 6: Final answer
   x = 45,310.95