Finding the Third Proportional to 408,952 and 620,776.50

Step by Step Solution

1. Step 1: Write the proportion equation
   408,952 : 620,776.50 = 620,776.50 : x
2. Step 2: Convert to fraction form
   408,952/620,776.50 = 620,776.50/x
3. Step 3: Cross multiply
   408,952x = 620,776.50 × 620,776.50
4. Step 4: Simplify right side
   408,952x = 385,363,462,952.25
5. Step 5: Solve for x
   x = 385,363,462,952.25/408,952
6. Step 6: Final answer
   x = 942,319.55