Finding the Third Proportional to 401,610 and 621,850.50

Step by Step Solution

1. Step 1: Write the proportion equation
   401,610 : 621,850.50 = 621,850.50 : x
2. Step 2: Convert to fraction form
   401,610/621,850.50 = 621,850.50/x
3. Step 3: Cross multiply
   401,610x = 621,850.50 × 621,850.50
4. Step 4: Simplify right side
   401,610x = 386,698,044,350.25
5. Step 5: Solve for x
   x = 386,698,044,350.25/401,610
6. Step 6: Final answer
   x = 962,869.56