Finding the Third Proportional to 220,826 and 478,994

Step by Step Solution

1. Step 1: Write the proportion equation
   220,826 : 478,994 = 478,994 : x
2. Step 2: Convert to fraction form
   220,826/478,994 = 478,994/x
3. Step 3: Cross multiply
   220,826x = 478,994 × 478,994
4. Step 4: Simplify right side
   220,826x = 229,435,252,036
5. Step 5: Solve for x
   x = 229,435,252,036/220,826
6. Step 6: Final answer
   x = 1,038,986.59