Finding the Third Proportional to 2,781.50 and 3,912

Step by Step Solution

1. Step 1: Write the proportion equation
   2,781.50 : 3,912 = 3,912 : x
2. Step 2: Convert to fraction form
   2,781.50/3,912 = 3,912/x
3. Step 3: Cross multiply
   2,781.50x = 3,912 × 3,912
4. Step 4: Simplify right side
   2,781.50x = 15,303,744
5. Step 5: Solve for x
   x = 15,303,744/2,781.50
6. Step 6: Final answer
   x = 5,501.98