Finding the Third Proportional to 39,217.50 and 80,519.91

Step by Step Solution

1. Step 1: Write the proportion equation
   39,217.50 : 80,519.91 = 80,519.91 : x
2. Step 2: Convert to fraction form
   39,217.50/80,519.91 = 80,519.91/x
3. Step 3: Cross multiply
   39,217.50x = 80,519.91 × 80,519.91
4. Step 4: Simplify right side
   39,217.50x = 6,483,455,302.51
5. Step 5: Solve for x
   x = 6,483,455,302.51/39,217.50
6. Step 6: Final answer
   x = 165,320.46