Finding the Third Proportional to 8,062.88 and 12,215.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,062.88 : 12,215.81 = 12,215.81 : x
2. Step 2: Convert to fraction form
   8,062.88/12,215.81 = 12,215.81/x
3. Step 3: Cross multiply
   8,062.88x = 12,215.81 × 12,215.81
4. Step 4: Simplify right side
   8,062.88x = 149,226,075.04
5. Step 5: Solve for x
   x = 149,226,075.04/8,062.88
6. Step 6: Final answer
   x = 18,507.80