Finding the Third Proportional to 5,574.29 and 8,434.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,574.29 : 8,434.05 = 8,434.05 : x
2. Step 2: Convert to fraction form
   5,574.29/8,434.05 = 8,434.05/x
3. Step 3: Cross multiply
   5,574.29x = 8,434.05 × 8,434.05
4. Step 4: Simplify right side
   5,574.29x = 71,133,130.22
5. Step 5: Solve for x
   x = 71,133,130.22/5,574.29
6. Step 6: Final answer
   x = 12,760.94