Finding the Third Proportional to 669,144 and 1,443,360

Step by Step Solution

1. Step 1: Write the proportion equation
   669,144 : 1,443,360 = 1,443,360 : x
2. Step 2: Convert to fraction form
   669,144/1,443,360 = 1,443,360/x
3. Step 3: Cross multiply
   669,144x = 1,443,360 × 1,443,360
4. Step 4: Simplify right side
   669,144x = 2,083,288,089,600
5. Step 5: Solve for x
   x = 2,083,288,089,600/669,144
6. Step 6: Final answer
   x = 3,113,362.88