Finding the Third Proportional to 611,772 and 1,321,944

Step by Step Solution

1. Step 1: Write the proportion equation
   611,772 : 1,321,944 = 1,321,944 : x
2. Step 2: Convert to fraction form
   611,772/1,321,944 = 1,321,944/x
3. Step 3: Cross multiply
   611,772x = 1,321,944 × 1,321,944
4. Step 4: Simplify right side
   611,772x = 1,747,535,939,136
5. Step 5: Solve for x
   x = 1,747,535,939,136/611,772
6. Step 6: Final answer
   x = 2,856,515.07