Finding the Third Proportional to 666,401 and 1,451,122

Step by Step Solution

1. Step 1: Write the proportion equation
   666,401 : 1,451,122 = 1,451,122 : x
2. Step 2: Convert to fraction form
   666,401/1,451,122 = 1,451,122/x
3. Step 3: Cross multiply
   666,401x = 1,451,122 × 1,451,122
4. Step 4: Simplify right side
   666,401x = 2,105,755,058,884
5. Step 5: Solve for x
   x = 2,105,755,058,884/666,401
6. Step 6: Final answer
   x = 3,159,891.81