Finding the Third Proportional to 7,840 and 10,648

Step by Step Solution

1. Step 1: Write the proportion equation
   7,840 : 10,648 = 10,648 : x
2. Step 2: Convert to fraction form
   7,840/10,648 = 10,648/x
3. Step 3: Cross multiply
   7,840x = 10,648 × 10,648
4. Step 4: Simplify right side
   7,840x = 113,379,904
5. Step 5: Solve for x
   x = 113,379,904/7,840
6. Step 6: Final answer
   x = 14,461.72