Finding the Third Proportional to 1,429.50 and 3,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.50 : 3,124.50 = 3,124.50 : x
2. Step 2: Convert to fraction form
   1,429.50/3,124.50 = 3,124.50/x
3. Step 3: Cross multiply
   1,429.50x = 3,124.50 × 3,124.50
4. Step 4: Simplify right side
   1,429.50x = 9,762,500.25
5. Step 5: Solve for x
   x = 9,762,500.25/1,429.50
6. Step 6: Final answer
   x = 6,829.31