Finding the Third Proportional to 6,120 and 13,656

Step by Step Solution

1. Step 1: Write the proportion equation
   6,120 : 13,656 = 13,656 : x
2. Step 2: Convert to fraction form
   6,120/13,656 = 13,656/x
3. Step 3: Cross multiply
   6,120x = 13,656 × 13,656
4. Step 4: Simplify right side
   6,120x = 186,486,336
5. Step 5: Solve for x
   x = 186,486,336/6,120
6. Step 6: Final answer
   x = 30,471.62