Finding the Third Proportional to 1,242.56 and 2,718.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,242.56 : 2,718.84 = 2,718.84 : x
2. Step 2: Convert to fraction form
   1,242.56/2,718.84 = 2,718.84/x
3. Step 3: Cross multiply
   1,242.56x = 2,718.84 × 2,718.84
4. Step 4: Simplify right side
   1,242.56x = 7,392,111.34
5. Step 5: Solve for x
   x = 7,392,111.34/1,242.56
6. Step 6: Final answer
   x = 5,949.09