Finding the Third Proportional to 12,256 and 21,360

Step by Step Solution

1. Step 1: Write the proportion equation
   12,256 : 21,360 = 21,360 : x
2. Step 2: Convert to fraction form
   12,256/21,360 = 21,360/x
3. Step 3: Cross multiply
   12,256x = 21,360 × 21,360
4. Step 4: Simplify right side
   12,256x = 456,249,600
5. Step 5: Solve for x
   x = 456,249,600/12,256
6. Step 6: Final answer
   x = 37,226.63