Finding the Third Proportional to 204,071.81 and 321,759

Step by Step Solution

1. Step 1: Write the proportion equation
   204,071.81 : 321,759 = 321,759 : x
2. Step 2: Convert to fraction form
   204,071.81/321,759 = 321,759/x
3. Step 3: Cross multiply
   204,071.81x = 321,759 × 321,759
4. Step 4: Simplify right side
   204,071.81x = 103,528,854,081
5. Step 5: Solve for x
   x = 103,528,854,081/204,071.81
6. Step 6: Final answer
   x = 507,315.80