Finding the Third Proportional to 383,256 and 806,237.25

Step by Step Solution

1. Step 1: Write the proportion equation
   383,256 : 806,237.25 = 806,237.25 : x
2. Step 2: Convert to fraction form
   383,256/806,237.25 = 806,237.25/x
3. Step 3: Cross multiply
   383,256x = 806,237.25 × 806,237.25
4. Step 4: Simplify right side
   383,256x = 650,018,503,287.56
5. Step 5: Solve for x
   x = 650,018,503,287.56/383,256
6. Step 6: Final answer
   x = 1,696,042.60