Finding the Third Proportional to 16,789.78 and 23,878.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,789.78 : 23,878.55 = 23,878.55 : x
2. Step 2: Convert to fraction form
   16,789.78/23,878.55 = 23,878.55/x
3. Step 3: Cross multiply
   16,789.78x = 23,878.55 × 23,878.55
4. Step 4: Simplify right side
   16,789.78x = 570,185,000.86
5. Step 5: Solve for x
   x = 570,185,000.86/16,789.78
6. Step 6: Final answer
   x = 33,960.24