Finding the Third Proportional to 3,970.50 and 5,920.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,970.50 : 5,920.50 = 5,920.50 : x
2. Step 2: Convert to fraction form
   3,970.50/5,920.50 = 5,920.50/x
3. Step 3: Cross multiply
   3,970.50x = 5,920.50 × 5,920.50
4. Step 4: Simplify right side
   3,970.50x = 35,052,320.25
5. Step 5: Solve for x
   x = 35,052,320.25/3,970.50
6. Step 6: Final answer
   x = 8,828.19