Finding the Third Proportional to 1,436 and 3,878

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436 : 3,878 = 3,878 : x
2. Step 2: Convert to fraction form
   1,436/3,878 = 3,878/x
3. Step 3: Cross multiply
   1,436x = 3,878 × 3,878
4. Step 4: Simplify right side
   1,436x = 15,038,884
5. Step 5: Solve for x
   x = 15,038,884/1,436
6. Step 6: Final answer
   x = 10,472.76