Finding the Third Proportional to 641,009 and 1,401,089

Step by Step Solution

1. Step 1: Write the proportion equation
   641,009 : 1,401,089 = 1,401,089 : x
2. Step 2: Convert to fraction form
   641,009/1,401,089 = 1,401,089/x
3. Step 3: Cross multiply
   641,009x = 1,401,089 × 1,401,089
4. Step 4: Simplify right side
   641,009x = 1,963,050,385,921
5. Step 5: Solve for x
   x = 1,963,050,385,921/641,009
6. Step 6: Final answer
   x = 3,062,438.10