Finding the Third Proportional to 11,328 and 15,222

Step by Step Solution

1. Step 1: Write the proportion equation
   11,328 : 15,222 = 15,222 : x
2. Step 2: Convert to fraction form
   11,328/15,222 = 15,222/x
3. Step 3: Cross multiply
   11,328x = 15,222 × 15,222
4. Step 4: Simplify right side
   11,328x = 231,709,284
5. Step 5: Solve for x
   x = 231,709,284/11,328
6. Step 6: Final answer
   x = 20,454.56