Finding the Third Proportional to 16,878 and 39,074.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,878 : 39,074.25 = 39,074.25 : x
2. Step 2: Convert to fraction form
   16,878/39,074.25 = 39,074.25/x
3. Step 3: Cross multiply
   16,878x = 39,074.25 × 39,074.25
4. Step 4: Simplify right side
   16,878x = 1,526,797,013.06
5. Step 5: Solve for x
   x = 1,526,797,013.06/16,878
6. Step 6: Final answer
   x = 90,460.78