Finding the Third Proportional to 326,608.50 and 699,873

Step by Step Solution

1. Step 1: Write the proportion equation
   326,608.50 : 699,873 = 699,873 : x
2. Step 2: Convert to fraction form
   326,608.50/699,873 = 699,873/x
3. Step 3: Cross multiply
   326,608.50x = 699,873 × 699,873
4. Step 4: Simplify right side
   326,608.50x = 489,822,216,129
5. Step 5: Solve for x
   x = 489,822,216,129/326,608.50
6. Step 6: Final answer
   x = 1,499,722.81