Finding the Third Proportional to 777,744 and 1,218,456

Step by Step Solution

1. Step 1: Write the proportion equation
   777,744 : 1,218,456 = 1,218,456 : x
2. Step 2: Convert to fraction form
   777,744/1,218,456 = 1,218,456/x
3. Step 3: Cross multiply
   777,744x = 1,218,456 × 1,218,456
4. Step 4: Simplify right side
   777,744x = 1,484,635,023,936
5. Step 5: Solve for x
   x = 1,484,635,023,936/777,744
6. Step 6: Final answer
   x = 1,908,899.36