Finding the Third Proportional to 11,216 and 15,404

Step by Step Solution

1. Step 1: Write the proportion equation
   11,216 : 15,404 = 15,404 : x
2. Step 2: Convert to fraction form
   11,216/15,404 = 15,404/x
3. Step 3: Cross multiply
   11,216x = 15,404 × 15,404
4. Step 4: Simplify right side
   11,216x = 237,283,216
5. Step 5: Solve for x
   x = 237,283,216/11,216
6. Step 6: Final answer
   x = 21,155.78