Finding the Third Proportional to 1,328,736 and 3,119,420

Step by Step Solution

1. Step 1: Write the proportion equation
   1,328,736 : 3,119,420 = 3,119,420 : x
2. Step 2: Convert to fraction form
   1,328,736/3,119,420 = 3,119,420/x
3. Step 3: Cross multiply
   1,328,736x = 3,119,420 × 3,119,420
4. Step 4: Simplify right side
   1,328,736x = 9,730,781,136,400
5. Step 5: Solve for x
   x = 9,730,781,136,400/1,328,736
6. Step 6: Final answer
   x = 7,323,336.72