Finding the Third Proportional to 401,667.50 and 587,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   401,667.50 : 587,108.50 = 587,108.50 : x
2. Step 2: Convert to fraction form
   401,667.50/587,108.50 = 587,108.50/x
3. Step 3: Cross multiply
   401,667.50x = 587,108.50 × 587,108.50
4. Step 4: Simplify right side
   401,667.50x = 344,696,390,772.25
5. Step 5: Solve for x
   x = 344,696,390,772.25/401,667.50
6. Step 6: Final answer
   x = 858,163.51