Finding the Third Proportional to 505,306.50 and 738,243

Step by Step Solution

1. Step 1: Write the proportion equation
   505,306.50 : 738,243 = 738,243 : x
2. Step 2: Convert to fraction form
   505,306.50/738,243 = 738,243/x
3. Step 3: Cross multiply
   505,306.50x = 738,243 × 738,243
4. Step 4: Simplify right side
   505,306.50x = 545,002,727,049
5. Step 5: Solve for x
   x = 545,002,727,049/505,306.50
6. Step 6: Final answer
   x = 1,078,558.71