Finding the Third Proportional to 16,872.25 and 25,819.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,872.25 : 25,819.50 = 25,819.50 : x
2. Step 2: Convert to fraction form
   16,872.25/25,819.50 = 25,819.50/x
3. Step 3: Cross multiply
   16,872.25x = 25,819.50 × 25,819.50
4. Step 4: Simplify right side
   16,872.25x = 666,646,580.25
5. Step 5: Solve for x
   x = 666,646,580.25/16,872.25
6. Step 6: Final answer
   x = 39,511.42