Finding the Third Proportional to 640,526 and 1,401,436

Step by Step Solution

1. Step 1: Write the proportion equation
   640,526 : 1,401,436 = 1,401,436 : x
2. Step 2: Convert to fraction form
   640,526/1,401,436 = 1,401,436/x
3. Step 3: Cross multiply
   640,526x = 1,401,436 × 1,401,436
4. Step 4: Simplify right side
   640,526x = 1,964,022,862,096
5. Step 5: Solve for x
   x = 1,964,022,862,096/640,526
6. Step 6: Final answer
   x = 3,066,265.63