Finding the Third Proportional to 1,139.81 and 2,493.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.81 : 2,493.94 = 2,493.94 : x
2. Step 2: Convert to fraction form
   1,139.81/2,493.94 = 2,493.94/x
3. Step 3: Cross multiply
   1,139.81x = 2,493.94 × 2,493.94
4. Step 4: Simplify right side
   1,139.81x = 6,219,724.25
5. Step 5: Solve for x
   x = 6,219,724.25/1,139.81
6. Step 6: Final answer
   x = 5,456.80