Finding the Third Proportional to 609,404 and 1,320,499

Step by Step Solution

1. Step 1: Write the proportion equation
   609,404 : 1,320,499 = 1,320,499 : x
2. Step 2: Convert to fraction form
   609,404/1,320,499 = 1,320,499/x
3. Step 3: Cross multiply
   609,404x = 1,320,499 × 1,320,499
4. Step 4: Simplify right side
   609,404x = 1,743,717,609,001
5. Step 5: Solve for x
   x = 1,743,717,609,001/609,404
6. Step 6: Final answer
   x = 2,861,349.14