Finding the Third Proportional to 451,939.50 and 699,789.38

Step by Step Solution

1. Step 1: Write the proportion equation
   451,939.50 : 699,789.38 = 699,789.38 : x
2. Step 2: Convert to fraction form
   451,939.50/699,789.38 = 699,789.38/x
3. Step 3: Cross multiply
   451,939.50x = 699,789.38 × 699,789.38
4. Step 4: Simplify right side
   451,939.50x = 489,705,169,362.89
5. Step 5: Solve for x
   x = 489,705,169,362.89/451,939.50
6. Step 6: Final answer
   x = 1,083,563.55