Finding the Third Proportional to 10,105 and 20,718

Step by Step Solution

1. Step 1: Write the proportion equation
   10,105 : 20,718 = 20,718 : x
2. Step 2: Convert to fraction form
   10,105/20,718 = 20,718/x
3. Step 3: Cross multiply
   10,105x = 20,718 × 20,718
4. Step 4: Simplify right side
   10,105x = 429,235,524
5. Step 5: Solve for x
   x = 429,235,524/10,105
6. Step 6: Final answer
   x = 42,477.54