Finding the Third Proportional to 11,871 and 25,389

Step by Step Solution

1. Step 1: Write the proportion equation
   11,871 : 25,389 = 25,389 : x
2. Step 2: Convert to fraction form
   11,871/25,389 = 25,389/x
3. Step 3: Cross multiply
   11,871x = 25,389 × 25,389
4. Step 4: Simplify right side
   11,871x = 644,601,321
5. Step 5: Solve for x
   x = 644,601,321/11,871
6. Step 6: Final answer
   x = 54,300.51