Finding the Third Proportional to 12,789 and 27,521

Step by Step Solution

1. Step 1: Write the proportion equation
   12,789 : 27,521 = 27,521 : x
2. Step 2: Convert to fraction form
   12,789/27,521 = 27,521/x
3. Step 3: Cross multiply
   12,789x = 27,521 × 27,521
4. Step 4: Simplify right side
   12,789x = 757,405,441
5. Step 5: Solve for x
   x = 757,405,441/12,789
6. Step 6: Final answer
   x = 59,223.20