Finding the Third Proportional to 668,212 and 1,036,268

Step by Step Solution

1. Step 1: Write the proportion equation
   668,212 : 1,036,268 = 1,036,268 : x
2. Step 2: Convert to fraction form
   668,212/1,036,268 = 1,036,268/x
3. Step 3: Cross multiply
   668,212x = 1,036,268 × 1,036,268
4. Step 4: Simplify right side
   668,212x = 1,073,851,367,824
5. Step 5: Solve for x
   x = 1,073,851,367,824/668,212
6. Step 6: Final answer
   x = 1,607,051.91