Finding the Third Proportional to 401,441.50 and 587,089

Step by Step Solution

1. Step 1: Write the proportion equation
   401,441.50 : 587,089 = 587,089 : x
2. Step 2: Convert to fraction form
   401,441.50/587,089 = 587,089/x
3. Step 3: Cross multiply
   401,441.50x = 587,089 × 587,089
4. Step 4: Simplify right side
   401,441.50x = 344,673,493,921
5. Step 5: Solve for x
   x = 344,673,493,921/401,441.50
6. Step 6: Final answer
   x = 858,589.59