Finding the Third Proportional to 605,770 and 1,321,555

Step by Step Solution

1. Step 1: Write the proportion equation
   605,770 : 1,321,555 = 1,321,555 : x
2. Step 2: Convert to fraction form
   605,770/1,321,555 = 1,321,555/x
3. Step 3: Cross multiply
   605,770x = 1,321,555 × 1,321,555
4. Step 4: Simplify right side
   605,770x = 1,746,507,618,025
5. Step 5: Solve for x
   x = 1,746,507,618,025/605,770
6. Step 6: Final answer
   x = 2,883,120.03