Finding the Third Proportional to 109,988 and 171,556

Step by Step Solution

1. Step 1: Write the proportion equation
   109,988 : 171,556 = 171,556 : x
2. Step 2: Convert to fraction form
   109,988/171,556 = 171,556/x
3. Step 3: Cross multiply
   109,988x = 171,556 × 171,556
4. Step 4: Simplify right side
   109,988x = 29,431,461,136
5. Step 5: Solve for x
   x = 29,431,461,136/109,988
6. Step 6: Final answer
   x = 267,587.93