Finding the Third Proportional to 3,355,120 and 7,180,440

Step by Step Solution

1. Step 1: Write the proportion equation
   3,355,120 : 7,180,440 = 7,180,440 : x
2. Step 2: Convert to fraction form
   3,355,120/7,180,440 = 7,180,440/x
3. Step 3: Cross multiply
   3,355,120x = 7,180,440 × 7,180,440
4. Step 4: Simplify right side
   3,355,120x = 51,558,718,593,600
5. Step 5: Solve for x
   x = 51,558,718,593,600/3,355,120
6. Step 6: Final answer
   x = 15,367,175.72