Finding the Third Proportional to 401,375.25 and 621,828

Step by Step Solution

1. Step 1: Write the proportion equation
   401,375.25 : 621,828 = 621,828 : x
2. Step 2: Convert to fraction form
   401,375.25/621,828 = 621,828/x
3. Step 3: Cross multiply
   401,375.25x = 621,828 × 621,828
4. Step 4: Simplify right side
   401,375.25x = 386,670,061,584
5. Step 5: Solve for x
   x = 386,670,061,584/401,375.25
6. Step 6: Final answer
   x = 963,362.99