Finding the Third Proportional to 11,200 and 15,158

Step by Step Solution

1. Step 1: Write the proportion equation
   11,200 : 15,158 = 15,158 : x
2. Step 2: Convert to fraction form
   11,200/15,158 = 15,158/x
3. Step 3: Cross multiply
   11,200x = 15,158 × 15,158
4. Step 4: Simplify right side
   11,200x = 229,764,964
5. Step 5: Solve for x
   x = 229,764,964/11,200
6. Step 6: Final answer
   x = 20,514.73