Finding the Third Proportional to 79,689 and 173,397

Step by Step Solution

1. Step 1: Write the proportion equation
   79,689 : 173,397 = 173,397 : x
2. Step 2: Convert to fraction form
   79,689/173,397 = 173,397/x
3. Step 3: Cross multiply
   79,689x = 173,397 × 173,397
4. Step 4: Simplify right side
   79,689x = 30,066,519,609
5. Step 5: Solve for x
   x = 30,066,519,609/79,689
6. Step 6: Final answer
   x = 377,298.24