Finding the Third Proportional to 80,907.50 and 126,645.50

Step by Step Solution

1. Step 1: Write the proportion equation
   80,907.50 : 126,645.50 = 126,645.50 : x
2. Step 2: Convert to fraction form
   80,907.50/126,645.50 = 126,645.50/x
3. Step 3: Cross multiply
   80,907.50x = 126,645.50 × 126,645.50
4. Step 4: Simplify right side
   80,907.50x = 16,039,082,670.25
5. Step 5: Solve for x
   x = 16,039,082,670.25/80,907.50
6. Step 6: Final answer
   x = 198,239.75