Finding the Third Proportional to 640,524 and 1,401,432

Step by Step Solution

1. Step 1: Write the proportion equation
   640,524 : 1,401,432 = 1,401,432 : x
2. Step 2: Convert to fraction form
   640,524/1,401,432 = 1,401,432/x
3. Step 3: Cross multiply
   640,524x = 1,401,432 × 1,401,432
4. Step 4: Simplify right side
   640,524x = 1,964,011,650,624
5. Step 5: Solve for x
   x = 1,964,011,650,624/640,524
6. Step 6: Final answer
   x = 3,066,257.71