Finding the Third Proportional to 387,704 and 822,360

Step by Step Solution

1. Step 1: Write the proportion equation
   387,704 : 822,360 = 822,360 : x
2. Step 2: Convert to fraction form
   387,704/822,360 = 822,360/x
3. Step 3: Cross multiply
   387,704x = 822,360 × 822,360
4. Step 4: Simplify right side
   387,704x = 676,275,969,600
5. Step 5: Solve for x
   x = 676,275,969,600/387,704
6. Step 6: Final answer
   x = 1,744,310.01