Finding the Third Proportional to 10,809 and 17,328

Step by Step Solution

1. Step 1: Write the proportion equation
   10,809 : 17,328 = 17,328 : x
2. Step 2: Convert to fraction form
   10,809/17,328 = 17,328/x
3. Step 3: Cross multiply
   10,809x = 17,328 × 17,328
4. Step 4: Simplify right side
   10,809x = 300,259,584
5. Step 5: Solve for x
   x = 300,259,584/10,809
6. Step 6: Final answer
   x = 27,778.66