Finding the Third Proportional to 10,389 and 16,131

Step by Step Solution

1. Step 1: Write the proportion equation
   10,389 : 16,131 = 16,131 : x
2. Step 2: Convert to fraction form
   10,389/16,131 = 16,131/x
3. Step 3: Cross multiply
   10,389x = 16,131 × 16,131
4. Step 4: Simplify right side
   10,389x = 260,209,161
5. Step 5: Solve for x
   x = 260,209,161/10,389
6. Step 6: Final answer
   x = 25,046.60