Finding the Third Proportional to 3,585.09 and 7,719.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,585.09 : 7,719.47 = 7,719.47 : x
2. Step 2: Convert to fraction form
   3,585.09/7,719.47 = 7,719.47/x
3. Step 3: Cross multiply
   3,585.09x = 7,719.47 × 7,719.47
4. Step 4: Simplify right side
   3,585.09x = 59,590,197.78
5. Step 5: Solve for x
   x = 59,590,197.78/3,585.09
6. Step 6: Final answer
   x = 16,621.66