Finding the Third Proportional to 4,877 and 10,687

Step by Step Solution

1. Step 1: Write the proportion equation
   4,877 : 10,687 = 10,687 : x
2. Step 2: Convert to fraction form
   4,877/10,687 = 10,687/x
3. Step 3: Cross multiply
   4,877x = 10,687 × 10,687
4. Step 4: Simplify right side
   4,877x = 114,211,969
5. Step 5: Solve for x
   x = 114,211,969/4,877
6. Step 6: Final answer
   x = 23,418.49