Finding the Third Proportional to 401,325.75 and 621,144

Step by Step Solution

1. Step 1: Write the proportion equation
   401,325.75 : 621,144 = 621,144 : x
2. Step 2: Convert to fraction form
   401,325.75/621,144 = 621,144/x
3. Step 3: Cross multiply
   401,325.75x = 621,144 × 621,144
4. Step 4: Simplify right side
   401,325.75x = 385,819,868,736
5. Step 5: Solve for x
   x = 385,819,868,736/401,325.75
6. Step 6: Final answer
   x = 961,363.35