Finding the Third Proportional to 16,816.50 and 25,821

Step by Step Solution

1. Step 1: Write the proportion equation
   16,816.50 : 25,821 = 25,821 : x
2. Step 2: Convert to fraction form
   16,816.50/25,821 = 25,821/x
3. Step 3: Cross multiply
   16,816.50x = 25,821 × 25,821
4. Step 4: Simplify right side
   16,816.50x = 666,724,041
5. Step 5: Solve for x
   x = 666,724,041/16,816.50
6. Step 6: Final answer
   x = 39,647.02