Finding the Third Proportional to 1,245.38 and 2,721.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,245.38 : 2,721.09 = 2,721.09 : x
2. Step 2: Convert to fraction form
   1,245.38/2,721.09 = 2,721.09/x
3. Step 3: Cross multiply
   1,245.38x = 2,721.09 × 2,721.09
4. Step 4: Simplify right side
   1,245.38x = 7,404,351.20
5. Step 5: Solve for x
   x = 7,404,351.20/1,245.38
6. Step 6: Final answer
   x = 5,945.48