Finding the Third Proportional to 325,404 and 666,665

Step by Step Solution

1. Step 1: Write the proportion equation
   325,404 : 666,665 = 666,665 : x
2. Step 2: Convert to fraction form
   325,404/666,665 = 666,665/x
3. Step 3: Cross multiply
   325,404x = 666,665 × 666,665
4. Step 4: Simplify right side
   325,404x = 444,442,222,225
5. Step 5: Solve for x
   x = 444,442,222,225/325,404
6. Step 6: Final answer
   x = 1,365,816.71