Finding the Third Proportional to 15,434 and 17,666

Step by Step Solution

1. Step 1: Write the proportion equation
   15,434 : 17,666 = 17,666 : x
2. Step 2: Convert to fraction form
   15,434/17,666 = 17,666/x
3. Step 3: Cross multiply
   15,434x = 17,666 × 17,666
4. Step 4: Simplify right side
   15,434x = 312,087,556
5. Step 5: Solve for x
   x = 312,087,556/15,434
6. Step 6: Final answer
   x = 20,220.78