Finding the Third Proportional to 609,353 and 1,320,400

Step by Step Solution

1. Step 1: Write the proportion equation
   609,353 : 1,320,400 = 1,320,400 : x
2. Step 2: Convert to fraction form
   609,353/1,320,400 = 1,320,400/x
3. Step 3: Cross multiply
   609,353x = 1,320,400 × 1,320,400
4. Step 4: Simplify right side
   609,353x = 1,743,456,160,000
5. Step 5: Solve for x
   x = 1,743,456,160,000/609,353
6. Step 6: Final answer
   x = 2,861,159.56