Finding the Third Proportional to 340,642 and 703,150

Step by Step Solution

1. Step 1: Write the proportion equation
   340,642 : 703,150 = 703,150 : x
2. Step 2: Convert to fraction form
   340,642/703,150 = 703,150/x
3. Step 3: Cross multiply
   340,642x = 703,150 × 703,150
4. Step 4: Simplify right side
   340,642x = 494,419,922,500
5. Step 5: Solve for x
   x = 494,419,922,500/340,642
6. Step 6: Final answer
   x = 1,451,435.59