Finding the Third Proportional to 1,136.38 and 2,489.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,136.38 : 2,489.63 = 2,489.63 : x
2. Step 2: Convert to fraction form
   1,136.38/2,489.63 = 2,489.63/x
3. Step 3: Cross multiply
   1,136.38x = 2,489.63 × 2,489.63
4. Step 4: Simplify right side
   1,136.38x = 6,198,232.64
5. Step 5: Solve for x
   x = 6,198,232.64/1,136.38
6. Step 6: Final answer
   x = 5,454.39