Finding the Third Proportional to 3,487.50 and 5,231.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,487.50 : 5,231.25 = 5,231.25 : x
2. Step 2: Convert to fraction form
   3,487.50/5,231.25 = 5,231.25/x
3. Step 3: Cross multiply
   3,487.50x = 5,231.25 × 5,231.25
4. Step 4: Simplify right side
   3,487.50x = 27,365,976.56
5. Step 5: Solve for x
   x = 27,365,976.56/3,487.50
6. Step 6: Final answer
   x = 7,846.88