Finding the Third Proportional to 1,100.81 and 1,718.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.81 : 1,718.63 = 1,718.63 : x
2. Step 2: Convert to fraction form
   1,100.81/1,718.63 = 1,718.63/x
3. Step 3: Cross multiply
   1,100.81x = 1,718.63 × 1,718.63
4. Step 4: Simplify right side
   1,100.81x = 2,953,671.89
5. Step 5: Solve for x
   x = 2,953,671.89/1,100.81
6. Step 6: Final answer
   x = 2,683.17