Finding the Third Proportional to 3,840 and 10,392

Step by Step Solution

1. Step 1: Write the proportion equation
   3,840 : 10,392 = 10,392 : x
2. Step 2: Convert to fraction form
   3,840/10,392 = 10,392/x
3. Step 3: Cross multiply
   3,840x = 10,392 × 10,392
4. Step 4: Simplify right side
   3,840x = 107,993,664
5. Step 5: Solve for x
   x = 107,993,664/3,840
6. Step 6: Final answer
   x = 28,123.35