Finding the Third Proportional to 387,570.38 and 822,046.50

Step by Step Solution

1. Step 1: Write the proportion equation
   387,570.38 : 822,046.50 = 822,046.50 : x
2. Step 2: Convert to fraction form
   387,570.38/822,046.50 = 822,046.50/x
3. Step 3: Cross multiply
   387,570.38x = 822,046.50 × 822,046.50
4. Step 4: Simplify right side
   387,570.38x = 675,760,448,162.25
5. Step 5: Solve for x
   x = 675,760,448,162.25/387,570.38
6. Step 6: Final answer
   x = 1,743,581.27