Finding the Third Proportional to 16,078 and 18,508

Step by Step Solution

1. Step 1: Write the proportion equation
   16,078 : 18,508 = 18,508 : x
2. Step 2: Convert to fraction form
   16,078/18,508 = 18,508/x
3. Step 3: Cross multiply
   16,078x = 18,508 × 18,508
4. Step 4: Simplify right side
   16,078x = 342,546,064
5. Step 5: Solve for x
   x = 342,546,064/16,078
6. Step 6: Final answer
   x = 21,305.27