Finding the Third Proportional to 1,123.40 and 2,336.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.40 : 2,336.50 = 2,336.50 : x
2. Step 2: Convert to fraction form
   1,123.40/2,336.50 = 2,336.50/x
3. Step 3: Cross multiply
   1,123.40x = 2,336.50 × 2,336.50
4. Step 4: Simplify right side
   1,123.40x = 5,459,241.38
5. Step 5: Solve for x
   x = 5,459,241.38/1,123.40
6. Step 6: Final answer
   x = 4,859.57