Finding the Third Proportional to 7,688 and 12,028

Step by Step Solution

1. Step 1: Write the proportion equation
   7,688 : 12,028 = 12,028 : x
2. Step 2: Convert to fraction form
   7,688/12,028 = 12,028/x
3. Step 3: Cross multiply
   7,688x = 12,028 × 12,028
4. Step 4: Simplify right side
   7,688x = 144,672,784
5. Step 5: Solve for x
   x = 144,672,784/7,688
6. Step 6: Final answer
   x = 18,818