Finding the Third Proportional to 668,740 and 1,036,644

Step by Step Solution

1. Step 1: Write the proportion equation
   668,740 : 1,036,644 = 1,036,644 : x
2. Step 2: Convert to fraction form
   668,740/1,036,644 = 1,036,644/x
3. Step 3: Cross multiply
   668,740x = 1,036,644 × 1,036,644
4. Step 4: Simplify right side
   668,740x = 1,074,630,782,736
5. Step 5: Solve for x
   x = 1,074,630,782,736/668,740
6. Step 6: Final answer
   x = 1,606,948.56