Finding the Third Proportional to 79,686 and 173,859.75

Step by Step Solution

1. Step 1: Write the proportion equation
   79,686 : 173,859.75 = 173,859.75 : x
2. Step 2: Convert to fraction form
   79,686/173,859.75 = 173,859.75/x
3. Step 3: Cross multiply
   79,686x = 173,859.75 × 173,859.75
4. Step 4: Simplify right side
   79,686x = 30,227,212,670.06
5. Step 5: Solve for x
   x = 30,227,212,670.06/79,686
6. Step 6: Final answer
   x = 379,329.02