Finding the Third Proportional to 1,287,222 and 2,776,788

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,222 : 2,776,788 = 2,776,788 : x
2. Step 2: Convert to fraction form
   1,287,222/2,776,788 = 2,776,788/x
3. Step 3: Cross multiply
   1,287,222x = 2,776,788 × 2,776,788
4. Step 4: Simplify right side
   1,287,222x = 7,710,551,596,944
5. Step 5: Solve for x
   x = 7,710,551,596,944/1,287,222
6. Step 6: Final answer
   x = 5,990,071.33