Finding the Third Proportional to 78,016.50 and 173,556

Step by Step Solution

1. Step 1: Write the proportion equation
   78,016.50 : 173,556 = 173,556 : x
2. Step 2: Convert to fraction form
   78,016.50/173,556 = 173,556/x
3. Step 3: Cross multiply
   78,016.50x = 173,556 × 173,556
4. Step 4: Simplify right side
   78,016.50x = 30,121,685,136
5. Step 5: Solve for x
   x = 30,121,685,136/78,016.50
6. Step 6: Final answer
   x = 386,093.78