Finding the Third Proportional to 4,888 and 10,256

Step by Step Solution

1. Step 1: Write the proportion equation
   4,888 : 10,256 = 10,256 : x
2. Step 2: Convert to fraction form
   4,888/10,256 = 10,256/x
3. Step 3: Cross multiply
   4,888x = 10,256 × 10,256
4. Step 4: Simplify right side
   4,888x = 105,185,536
5. Step 5: Solve for x
   x = 105,185,536/4,888
6. Step 6: Final answer
   x = 21,519.14