Finding the Third Proportional to 3,090,900 and 4,728,138

Step by Step Solution

1. Step 1: Write the proportion equation
   3,090,900 : 4,728,138 = 4,728,138 : x
2. Step 2: Convert to fraction form
   3,090,900/4,728,138 = 4,728,138/x
3. Step 3: Cross multiply
   3,090,900x = 4,728,138 × 4,728,138
4. Step 4: Simplify right side
   3,090,900x = 22,355,288,947,044
5. Step 5: Solve for x
   x = 22,355,288,947,044/3,090,900
6. Step 6: Final answer
   x = 7,232,614.76