Finding the Third Proportional to 404,095.50 and 621,309.38

Step by Step Solution

1. Step 1: Write the proportion equation
   404,095.50 : 621,309.38 = 621,309.38 : x
2. Step 2: Convert to fraction form
   404,095.50/621,309.38 = 621,309.38/x
3. Step 3: Cross multiply
   404,095.50x = 621,309.38 × 621,309.38
4. Step 4: Simplify right side
   404,095.50x = 386,025,339,462.89
5. Step 5: Solve for x
   x = 386,025,339,462.89/404,095.50
6. Step 6: Final answer
   x = 955,282.45