Finding the Third Proportional to 321,524 and 706,105

Step by Step Solution

1. Step 1: Write the proportion equation
   321,524 : 706,105 = 706,105 : x
2. Step 2: Convert to fraction form
   321,524/706,105 = 706,105/x
3. Step 3: Cross multiply
   321,524x = 706,105 × 706,105
4. Step 4: Simplify right side
   321,524x = 498,584,271,025
5. Step 5: Solve for x
   x = 498,584,271,025/321,524
6. Step 6: Final answer
   x = 1,550,690.68