Finding the Third Proportional to 3,517.25 and 7,620.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,517.25 : 7,620.25 = 7,620.25 : x
2. Step 2: Convert to fraction form
   3,517.25/7,620.25 = 7,620.25/x
3. Step 3: Cross multiply
   3,517.25x = 7,620.25 × 7,620.25
4. Step 4: Simplify right side
   3,517.25x = 58,068,210.06
5. Step 5: Solve for x
   x = 58,068,210.06/3,517.25
6. Step 6: Final answer
   x = 16,509.55