Finding the Third Proportional to 39,919 and 55,504.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,919 : 55,504.50 = 55,504.50 : x
2. Step 2: Convert to fraction form
   39,919/55,504.50 = 55,504.50/x
3. Step 3: Cross multiply
   39,919x = 55,504.50 × 55,504.50
4. Step 4: Simplify right side
   39,919x = 3,080,749,520.25
5. Step 5: Solve for x
   x = 3,080,749,520.25/39,919
6. Step 6: Final answer
   x = 77,175.02