Finding the Third Proportional to 10,170 and 20,838

Step by Step Solution

1. Step 1: Write the proportion equation
   10,170 : 20,838 = 20,838 : x
2. Step 2: Convert to fraction form
   10,170/20,838 = 20,838/x
3. Step 3: Cross multiply
   10,170x = 20,838 × 20,838
4. Step 4: Simplify right side
   10,170x = 434,222,244
5. Step 5: Solve for x
   x = 434,222,244/10,170
6. Step 6: Final answer
   x = 42,696.39