Finding the Third Proportional to 7,764 and 12,600

Step by Step Solution

1. Step 1: Write the proportion equation
   7,764 : 12,600 = 12,600 : x
2. Step 2: Convert to fraction form
   7,764/12,600 = 12,600/x
3. Step 3: Cross multiply
   7,764x = 12,600 × 12,600
4. Step 4: Simplify right side
   7,764x = 158,760,000
5. Step 5: Solve for x
   x = 158,760,000/7,764
6. Step 6: Final answer
   x = 20,448.22