Finding the Third Proportional to 80,930.50 and 177,920

Step by Step Solution

1. Step 1: Write the proportion equation
   80,930.50 : 177,920 = 177,920 : x
2. Step 2: Convert to fraction form
   80,930.50/177,920 = 177,920/x
3. Step 3: Cross multiply
   80,930.50x = 177,920 × 177,920
4. Step 4: Simplify right side
   80,930.50x = 31,655,526,400
5. Step 5: Solve for x
   x = 31,655,526,400/80,930.50
6. Step 6: Final answer
   x = 391,144.58