Finding the Third Proportional to 668,411 and 1,443,355

Step by Step Solution

1. Step 1: Write the proportion equation
   668,411 : 1,443,355 = 1,443,355 : x
2. Step 2: Convert to fraction form
   668,411/1,443,355 = 1,443,355/x
3. Step 3: Cross multiply
   668,411x = 1,443,355 × 1,443,355
4. Step 4: Simplify right side
   668,411x = 2,083,273,656,025
5. Step 5: Solve for x
   x = 2,083,273,656,025/668,411
6. Step 6: Final answer
   x = 3,116,755.49