Finding the Third Proportional to 78,016.50 and 165,330

Step by Step Solution

1. Step 1: Write the proportion equation
   78,016.50 : 165,330 = 165,330 : x
2. Step 2: Convert to fraction form
   78,016.50/165,330 = 165,330/x
3. Step 3: Cross multiply
   78,016.50x = 165,330 × 165,330
4. Step 4: Simplify right side
   78,016.50x = 27,334,008,900
5. Step 5: Solve for x
   x = 27,334,008,900/78,016.50
6. Step 6: Final answer
   x = 350,361.90