Finding the Third Proportional to 12,788 and 18,788

Step by Step Solution

1. Step 1: Write the proportion equation
   12,788 : 18,788 = 18,788 : x
2. Step 2: Convert to fraction form
   12,788/18,788 = 18,788/x
3. Step 3: Cross multiply
   12,788x = 18,788 × 18,788
4. Step 4: Simplify right side
   12,788x = 352,988,944
5. Step 5: Solve for x
   x = 352,988,944/12,788
6. Step 6: Final answer
   x = 27,603.14