Finding the Third Proportional to 16,900 and 25,399

Step by Step Solution

1. Step 1: Write the proportion equation
   16,900 : 25,399 = 25,399 : x
2. Step 2: Convert to fraction form
   16,900/25,399 = 25,399/x
3. Step 3: Cross multiply
   16,900x = 25,399 × 25,399
4. Step 4: Simplify right side
   16,900x = 645,109,201
5. Step 5: Solve for x
   x = 645,109,201/16,900
6. Step 6: Final answer
   x = 38,172.14