Finding the Third Proportional to 505.78 and 1,100.63

Step by Step Solution

1. Step 1: Write the proportion equation
   505.78 : 1,100.63 = 1,100.63 : x
2. Step 2: Convert to fraction form
   505.78/1,100.63 = 1,100.63/x
3. Step 3: Cross multiply
   505.78x = 1,100.63 × 1,100.63
4. Step 4: Simplify right side
   505.78x = 1,211,375.39
5. Step 5: Solve for x
   x = 1,211,375.39/505.78
6. Step 6: Final answer
   x = 2,395.06