Finding the Third Proportional to 11,169 and 12,789

Step by Step Solution

1. Step 1: Write the proportion equation
   11,169 : 12,789 = 12,789 : x
2. Step 2: Convert to fraction form
   11,169/12,789 = 12,789/x
3. Step 3: Cross multiply
   11,169x = 12,789 × 12,789
4. Step 4: Simplify right side
   11,169x = 163,558,521
5. Step 5: Solve for x
   x = 163,558,521/11,169
6. Step 6: Final answer
   x = 14,643.97