Finding the Third Proportional to 3,512.50 and 5,118.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,512.50 : 5,118.50 = 5,118.50 : x
2. Step 2: Convert to fraction form
   3,512.50/5,118.50 = 5,118.50/x
3. Step 3: Cross multiply
   3,512.50x = 5,118.50 × 5,118.50
4. Step 4: Simplify right side
   3,512.50x = 26,199,042.25
5. Step 5: Solve for x
   x = 26,199,042.25/3,512.50
6. Step 6: Final answer
   x = 7,458.80