Finding the Third Proportional to 80,947.50 and 173,788.50

Step by Step Solution

1. Step 1: Write the proportion equation
   80,947.50 : 173,788.50 = 173,788.50 : x
2. Step 2: Convert to fraction form
   80,947.50/173,788.50 = 173,788.50/x
3. Step 3: Cross multiply
   80,947.50x = 173,788.50 × 173,788.50
4. Step 4: Simplify right side
   80,947.50x = 30,202,442,732.25
5. Step 5: Solve for x
   x = 30,202,442,732.25/80,947.50
6. Step 6: Final answer
   x = 373,111.49