Finding the Third Proportional to 6,558 and 12,186

Step by Step Solution

1. Step 1: Write the proportion equation
   6,558 : 12,186 = 12,186 : x
2. Step 2: Convert to fraction form
   6,558/12,186 = 12,186/x
3. Step 3: Cross multiply
   6,558x = 12,186 × 12,186
4. Step 4: Simplify right side
   6,558x = 148,498,596
5. Step 5: Solve for x
   x = 148,498,596/6,558
6. Step 6: Final answer
   x = 22,643.88