Finding the Third Proportional to 774,770 and 1,678,222

Step by Step Solution

1. Step 1: Write the proportion equation
   774,770 : 1,678,222 = 1,678,222 : x
2. Step 2: Convert to fraction form
   774,770/1,678,222 = 1,678,222/x
3. Step 3: Cross multiply
   774,770x = 1,678,222 × 1,678,222
4. Step 4: Simplify right side
   774,770x = 2,816,429,081,284
5. Step 5: Solve for x
   x = 2,816,429,081,284/774,770
6. Step 6: Final answer
   x = 3,635,180.87