Finding the Third Proportional to 12,856 and 16,804

Step by Step Solution

1. Step 1: Write the proportion equation
   12,856 : 16,804 = 16,804 : x
2. Step 2: Convert to fraction form
   12,856/16,804 = 16,804/x
3. Step 3: Cross multiply
   12,856x = 16,804 × 16,804
4. Step 4: Simplify right side
   12,856x = 282,374,416
5. Step 5: Solve for x
   x = 282,374,416/12,856
6. Step 6: Final answer
   x = 21,964.41