Finding the Third Proportional to 80,930 and 177,920.50

Step by Step Solution

1. Step 1: Write the proportion equation
   80,930 : 177,920.50 = 177,920.50 : x
2. Step 2: Convert to fraction form
   80,930/177,920.50 = 177,920.50/x
3. Step 3: Cross multiply
   80,930x = 177,920.50 × 177,920.50
4. Step 4: Simplify right side
   80,930x = 31,655,704,320.25
5. Step 5: Solve for x
   x = 31,655,704,320.25/80,930
6. Step 6: Final answer
   x = 391,149.19