Finding the Third Proportional to 1,243.62 and 2,681.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243.62 : 2,681.51 = 2,681.51 : x
2. Step 2: Convert to fraction form
   1,243.62/2,681.51 = 2,681.51/x
3. Step 3: Cross multiply
   1,243.62x = 2,681.51 × 2,681.51
4. Step 4: Simplify right side
   1,243.62x = 7,190,484.15
5. Step 5: Solve for x
   x = 7,190,484.15/1,243.62
6. Step 6: Final answer
   x = 5,781.91