Finding the Third Proportional to 2,487.38 and 5,213.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.38 : 5,213.81 = 5,213.81 : x
2. Step 2: Convert to fraction form
   2,487.38/5,213.81 = 5,213.81/x
3. Step 3: Cross multiply
   2,487.38x = 5,213.81 × 5,213.81
4. Step 4: Simplify right side
   2,487.38x = 27,183,840.79
5. Step 5: Solve for x
   x = 27,183,840.79/2,487.38
6. Step 6: Final answer
   x = 10,928.73