Finding the Third Proportional to 7,980.19 and 12,081.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,980.19 : 12,081.38 = 12,081.38 : x
2. Step 2: Convert to fraction form
   7,980.19/12,081.38 = 12,081.38/x
3. Step 3: Cross multiply
   7,980.19x = 12,081.38 × 12,081.38
4. Step 4: Simplify right side
   7,980.19x = 145,959,621.89
5. Step 5: Solve for x
   x = 145,959,621.89/7,980.19
6. Step 6: Final answer
   x = 18,290.25