Finding the Third Proportional to 1,375 and 3,243.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375 : 3,243.50 = 3,243.50 : x
2. Step 2: Convert to fraction form
   1,375/3,243.50 = 3,243.50/x
3. Step 3: Cross multiply
   1,375x = 3,243.50 × 3,243.50
4. Step 4: Simplify right side
   1,375x = 10,520,292.25
5. Step 5: Solve for x
   x = 10,520,292.25/1,375
6. Step 6: Final answer
   x = 7,651.12