Finding the Third Proportional to 383,212.69 and 806,123.81

Step by Step Solution

1. Step 1: Write the proportion equation
   383,212.69 : 806,123.81 = 806,123.81 : x
2. Step 2: Convert to fraction form
   383,212.69/806,123.81 = 806,123.81/x
3. Step 3: Cross multiply
   383,212.69x = 806,123.81 × 806,123.81
4. Step 4: Simplify right side
   383,212.69x = 649,835,601,079.54
5. Step 5: Solve for x
   x = 649,835,601,079.54/383,212.69
6. Step 6: Final answer
   x = 1,695,757.01