Finding the Third Proportional to 78,336.50 and 160,820

Step by Step Solution

1. Step 1: Write the proportion equation
   78,336.50 : 160,820 = 160,820 : x
2. Step 2: Convert to fraction form
   78,336.50/160,820 = 160,820/x
3. Step 3: Cross multiply
   78,336.50x = 160,820 × 160,820
4. Step 4: Simplify right side
   78,336.50x = 25,863,072,400
5. Step 5: Solve for x
   x = 25,863,072,400/78,336.50
6. Step 6: Final answer
   x = 330,153.54