Finding the Third Proportional to 3,431 and 5,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,431 : 5,124.50 = 5,124.50 : x
2. Step 2: Convert to fraction form
   3,431/5,124.50 = 5,124.50/x
3. Step 3: Cross multiply
   3,431x = 5,124.50 × 5,124.50
4. Step 4: Simplify right side
   3,431x = 26,260,500.25
5. Step 5: Solve for x
   x = 26,260,500.25/3,431
6. Step 6: Final answer
   x = 7,653.89