Finding the Third Proportional to 7,986 and 12,262.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,986 : 12,262.50 = 12,262.50 : x
2. Step 2: Convert to fraction form
   7,986/12,262.50 = 12,262.50/x
3. Step 3: Cross multiply
   7,986x = 12,262.50 × 12,262.50
4. Step 4: Simplify right side
   7,986x = 150,368,906.25
5. Step 5: Solve for x
   x = 150,368,906.25/7,986
6. Step 6: Final answer
   x = 18,829.06