Finding the Third Proportional to 17,911 and 27,686

Step by Step Solution

1. Step 1: Write the proportion equation
   17,911 : 27,686 = 27,686 : x
2. Step 2: Convert to fraction form
   17,911/27,686 = 27,686/x
3. Step 3: Cross multiply
   17,911x = 27,686 × 27,686
4. Step 4: Simplify right side
   17,911x = 766,514,596
5. Step 5: Solve for x
   x = 766,514,596/17,911
6. Step 6: Final answer
   x = 42,795.75