Finding the Third Proportional to 408,827.25 and 620,622

Step by Step Solution

1. Step 1: Write the proportion equation
   408,827.25 : 620,622 = 620,622 : x
2. Step 2: Convert to fraction form
   408,827.25/620,622 = 620,622/x
3. Step 3: Cross multiply
   408,827.25x = 620,622 × 620,622
4. Step 4: Simplify right side
   408,827.25x = 385,171,666,884
5. Step 5: Solve for x
   x = 385,171,666,884/408,827.25
6. Step 6: Final answer
   x = 942,137.95