Finding the Third Proportional to 6,987 and 12,010.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,987 : 12,010.50 = 12,010.50 : x
2. Step 2: Convert to fraction form
   6,987/12,010.50 = 12,010.50/x
3. Step 3: Cross multiply
   6,987x = 12,010.50 × 12,010.50
4. Step 4: Simplify right side
   6,987x = 144,252,110.25
5. Step 5: Solve for x
   x = 144,252,110.25/6,987
6. Step 6: Final answer
   x = 20,645.79