Finding the Third Proportional to 12,381 and 25,781

Step by Step Solution

1. Step 1: Write the proportion equation
   12,381 : 25,781 = 25,781 : x
2. Step 2: Convert to fraction form
   12,381/25,781 = 25,781/x
3. Step 3: Cross multiply
   12,381x = 25,781 × 25,781
4. Step 4: Simplify right side
   12,381x = 664,659,961
5. Step 5: Solve for x
   x = 664,659,961/12,381
6. Step 6: Final answer
   x = 53,683.87