Finding the Third Proportional to 3,518.50 and 4,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,518.50 : 4,124.50 = 4,124.50 : x
2. Step 2: Convert to fraction form
   3,518.50/4,124.50 = 4,124.50/x
3. Step 3: Cross multiply
   3,518.50x = 4,124.50 × 4,124.50
4. Step 4: Simplify right side
   3,518.50x = 17,011,500.25
5. Step 5: Solve for x
   x = 17,011,500.25/3,518.50
6. Step 6: Final answer
   x = 4,834.87