Finding the Third Proportional to 3,617.79 and 7,336.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,617.79 : 7,336.20 = 7,336.20 : x
2. Step 2: Convert to fraction form
   3,617.79/7,336.20 = 7,336.20/x
3. Step 3: Cross multiply
   3,617.79x = 7,336.20 × 7,336.20
4. Step 4: Simplify right side
   3,617.79x = 53,819,761.66
5. Step 5: Solve for x
   x = 53,819,761.66/3,617.79
6. Step 6: Final answer
   x = 14,876.42