Finding the Third Proportional to 12,780 and 17,073

Step by Step Solution

1. Step 1: Write the proportion equation
   12,780 : 17,073 = 17,073 : x
2. Step 2: Convert to fraction form
   12,780/17,073 = 17,073/x
3. Step 3: Cross multiply
   12,780x = 17,073 × 17,073
4. Step 4: Simplify right side
   12,780x = 291,487,329
5. Step 5: Solve for x
   x = 291,487,329/12,780
6. Step 6: Final answer
   x = 22,808.09