Finding the Third Proportional to 4,785 and 10,122

Step by Step Solution

1. Step 1: Write the proportion equation
   4,785 : 10,122 = 10,122 : x
2. Step 2: Convert to fraction form
   4,785/10,122 = 10,122/x
3. Step 3: Cross multiply
   4,785x = 10,122 × 10,122
4. Step 4: Simplify right side
   4,785x = 102,454,884
5. Step 5: Solve for x
   x = 102,454,884/4,785
6. Step 6: Final answer
   x = 21,411.68