Finding the Third Proportional to 3,980.25 and 8,453.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.25 : 8,453.25 = 8,453.25 : x
2. Step 2: Convert to fraction form
   3,980.25/8,453.25 = 8,453.25/x
3. Step 3: Cross multiply
   3,980.25x = 8,453.25 × 8,453.25
4. Step 4: Simplify right side
   3,980.25x = 71,457,435.56
5. Step 5: Solve for x
   x = 71,457,435.56/3,980.25
6. Step 6: Final answer
   x = 17,953.00