Finding the Third Proportional to 8,054 and 12,780

Step by Step Solution

1. Step 1: Write the proportion equation
   8,054 : 12,780 = 12,780 : x
2. Step 2: Convert to fraction form
   8,054/12,780 = 12,780/x
3. Step 3: Cross multiply
   8,054x = 12,780 × 12,780
4. Step 4: Simplify right side
   8,054x = 163,328,400
5. Step 5: Solve for x
   x = 163,328,400/8,054
6. Step 6: Final answer
   x = 20,279.17