Finding the Third Proportional to 320,279 and 741,369.50

Step by Step Solution

1. Step 1: Write the proportion equation
   320,279 : 741,369.50 = 741,369.50 : x
2. Step 2: Convert to fraction form
   320,279/741,369.50 = 741,369.50/x
3. Step 3: Cross multiply
   320,279x = 741,369.50 × 741,369.50
4. Step 4: Simplify right side
   320,279x = 549,628,735,530.25
5. Step 5: Solve for x
   x = 549,628,735,530.25/320,279
6. Step 6: Final answer
   x = 1,716,093.58