Finding the Third Proportional to 11,360 and 21,320

Step by Step Solution

1. Step 1: Write the proportion equation
   11,360 : 21,320 = 21,320 : x
2. Step 2: Convert to fraction form
   11,360/21,320 = 21,320/x
3. Step 3: Cross multiply
   11,360x = 21,320 × 21,320
4. Step 4: Simplify right side
   11,360x = 454,542,400
5. Step 5: Solve for x
   x = 454,542,400/11,360
6. Step 6: Final answer
   x = 40,012.54