Finding the Third Proportional to 223,400 and 486,116

Step by Step Solution

1. Step 1: Write the proportion equation
   223,400 : 486,116 = 486,116 : x
2. Step 2: Convert to fraction form
   223,400/486,116 = 486,116/x
3. Step 3: Cross multiply
   223,400x = 486,116 × 486,116
4. Step 4: Simplify right side
   223,400x = 236,308,765,456
5. Step 5: Solve for x
   x = 236,308,765,456/223,400
6. Step 6: Final answer
   x = 1,057,783.19