Finding the Third Proportional to 12,256 and 18,516

Step by Step Solution

1. Step 1: Write the proportion equation
   12,256 : 18,516 = 18,516 : x
2. Step 2: Convert to fraction form
   12,256/18,516 = 18,516/x
3. Step 3: Cross multiply
   12,256x = 18,516 × 18,516
4. Step 4: Simplify right side
   12,256x = 342,842,256
5. Step 5: Solve for x
   x = 342,842,256/12,256
6. Step 6: Final answer
   x = 27,973.42