Finding the Third Proportional to 140,683.50 and 286,578

Step by Step Solution

1. Step 1: Write the proportion equation
   140,683.50 : 286,578 = 286,578 : x
2. Step 2: Convert to fraction form
   140,683.50/286,578 = 286,578/x
3. Step 3: Cross multiply
   140,683.50x = 286,578 × 286,578
4. Step 4: Simplify right side
   140,683.50x = 82,126,950,084
5. Step 5: Solve for x
   x = 82,126,950,084/140,683.50
6. Step 6: Final answer
   x = 583,771.02