Finding the Third Proportional to 609,394 and 1,320,480

Step by Step Solution

1. Step 1: Write the proportion equation
   609,394 : 1,320,480 = 1,320,480 : x
2. Step 2: Convert to fraction form
   609,394/1,320,480 = 1,320,480/x
3. Step 3: Cross multiply
   609,394x = 1,320,480 × 1,320,480
4. Step 4: Simplify right side
   609,394x = 1,743,667,430,400
5. Step 5: Solve for x
   x = 1,743,667,430,400/609,394
6. Step 6: Final answer
   x = 2,861,313.75