Finding the Third Proportional to 7,688 and 10,242

Step by Step Solution

1. Step 1: Write the proportion equation
   7,688 : 10,242 = 10,242 : x
2. Step 2: Convert to fraction form
   7,688/10,242 = 10,242/x
3. Step 3: Cross multiply
   7,688x = 10,242 × 10,242
4. Step 4: Simplify right side
   7,688x = 104,898,564
5. Step 5: Solve for x
   x = 104,898,564/7,688
6. Step 6: Final answer
   x = 13,644.45