Finding the Third Proportional to 1,238,642 and 2,720,866

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,642 : 2,720,866 = 2,720,866 : x
2. Step 2: Convert to fraction form
   1,238,642/2,720,866 = 2,720,866/x
3. Step 3: Cross multiply
   1,238,642x = 2,720,866 × 2,720,866
4. Step 4: Simplify right side
   1,238,642x = 7,403,111,789,956
5. Step 5: Solve for x
   x = 7,403,111,789,956/1,238,642
6. Step 6: Final answer
   x = 5,976,797.00