Finding the Third Proportional to 1,123.69 and 2,409.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.69 : 2,409.94 = 2,409.94 : x
2. Step 2: Convert to fraction form
   1,123.69/2,409.94 = 2,409.94/x
3. Step 3: Cross multiply
   1,123.69x = 2,409.94 × 2,409.94
4. Step 4: Simplify right side
   1,123.69x = 5,807,798.75
5. Step 5: Solve for x
   x = 5,807,798.75/1,123.69
6. Step 6: Final answer
   x = 5,168.52