Finding the Third Proportional to 11,150 and 21,274

Step by Step Solution

1. Step 1: Write the proportion equation
   11,150 : 21,274 = 21,274 : x
2. Step 2: Convert to fraction form
   11,150/21,274 = 21,274/x
3. Step 3: Cross multiply
   11,150x = 21,274 × 21,274
4. Step 4: Simplify right side
   11,150x = 452,583,076
5. Step 5: Solve for x
   x = 452,583,076/11,150
6. Step 6: Final answer
   x = 40,590.41