Finding the Third Proportional to 3,540.66 and 7,501.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,540.66 : 7,501.78 = 7,501.78 : x
2. Step 2: Convert to fraction form
   3,540.66/7,501.78 = 7,501.78/x
3. Step 3: Cross multiply
   3,540.66x = 7,501.78 × 7,501.78
4. Step 4: Simplify right side
   3,540.66x = 56,276,721.92
5. Step 5: Solve for x
   x = 56,276,721.92/3,540.66
6. Step 6: Final answer
   x = 15,894.43