Finding the Third Proportional to 16,400.50 and 35,879

Step by Step Solution

1. Step 1: Write the proportion equation
   16,400.50 : 35,879 = 35,879 : x
2. Step 2: Convert to fraction form
   16,400.50/35,879 = 35,879/x
3. Step 3: Cross multiply
   16,400.50x = 35,879 × 35,879
4. Step 4: Simplify right side
   16,400.50x = 1,287,302,641
5. Step 5: Solve for x
   x = 1,287,302,641/16,400.50
6. Step 6: Final answer
   x = 78,491.67