Finding the Third Proportional to 410,222 and 620,994

Step by Step Solution

1. Step 1: Write the proportion equation
   410,222 : 620,994 = 620,994 : x
2. Step 2: Convert to fraction form
   410,222/620,994 = 620,994/x
3. Step 3: Cross multiply
   410,222x = 620,994 × 620,994
4. Step 4: Simplify right side
   410,222x = 385,633,548,036
5. Step 5: Solve for x
   x = 385,633,548,036/410,222
6. Step 6: Final answer
   x = 940,060.62