Finding the Third Proportional to 3,845.81 and 8,409.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,845.81 : 8,409.94 = 8,409.94 : x
2. Step 2: Convert to fraction form
   3,845.81/8,409.94 = 8,409.94/x
3. Step 3: Cross multiply
   3,845.81x = 8,409.94 × 8,409.94
4. Step 4: Simplify right side
   3,845.81x = 70,727,048.75
5. Step 5: Solve for x
   x = 70,727,048.75/3,845.81
6. Step 6: Final answer
   x = 18,390.66