Finding the Third Proportional to 17,086 and 18,706

Step by Step Solution

1. Step 1: Write the proportion equation
   17,086 : 18,706 = 18,706 : x
2. Step 2: Convert to fraction form
   17,086/18,706 = 18,706/x
3. Step 3: Cross multiply
   17,086x = 18,706 × 18,706
4. Step 4: Simplify right side
   17,086x = 349,914,436
5. Step 5: Solve for x
   x = 349,914,436/17,086
6. Step 6: Final answer
   x = 20,479.60