Finding the Third Proportional to 3,620.25 and 7,918.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,620.25 : 7,918.88 = 7,918.88 : x
2. Step 2: Convert to fraction form
   3,620.25/7,918.88 = 7,918.88/x
3. Step 3: Cross multiply
   3,620.25x = 7,918.88 × 7,918.88
4. Step 4: Simplify right side
   3,620.25x = 62,708,581.27
5. Step 5: Solve for x
   x = 62,708,581.27/3,620.25
6. Step 6: Final answer
   x = 17,321.62