Finding the Third Proportional to 39,091.50 and 80,860.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,091.50 : 80,860.50 = 80,860.50 : x
2. Step 2: Convert to fraction form
   39,091.50/80,860.50 = 80,860.50/x
3. Step 3: Cross multiply
   39,091.50x = 80,860.50 × 80,860.50
4. Step 4: Simplify right side
   39,091.50x = 6,538,420,460.25
5. Step 5: Solve for x
   x = 6,538,420,460.25/39,091.50
6. Step 6: Final answer
   x = 167,259.39