Finding the Third Proportional to 16,398 and 25,243

Step by Step Solution

1. Step 1: Write the proportion equation
   16,398 : 25,243 = 25,243 : x
2. Step 2: Convert to fraction form
   16,398/25,243 = 25,243/x
3. Step 3: Cross multiply
   16,398x = 25,243 × 25,243
4. Step 4: Simplify right side
   16,398x = 637,209,049
5. Step 5: Solve for x
   x = 637,209,049/16,398
6. Step 6: Final answer
   x = 38,858.95