Finding the Third Proportional to 328,600.50 and 479,970

Step by Step Solution

1. Step 1: Write the proportion equation
   328,600.50 : 479,970 = 479,970 : x
2. Step 2: Convert to fraction form
   328,600.50/479,970 = 479,970/x
3. Step 3: Cross multiply
   328,600.50x = 479,970 × 479,970
4. Step 4: Simplify right side
   328,600.50x = 230,371,200,900
5. Step 5: Solve for x
   x = 230,371,200,900/328,600.50
6. Step 6: Final answer
   x = 701,067.71