Finding the Third Proportional to 321,099.75 and 705,762

Step by Step Solution

1. Step 1: Write the proportion equation
   321,099.75 : 705,762 = 705,762 : x
2. Step 2: Convert to fraction form
   321,099.75/705,762 = 705,762/x
3. Step 3: Cross multiply
   321,099.75x = 705,762 × 705,762
4. Step 4: Simplify right side
   321,099.75x = 498,100,000,644
5. Step 5: Solve for x
   x = 498,100,000,644/321,099.75
6. Step 6: Final answer
   x = 1,551,231.36