Finding the Third Proportional to 3,090,311 and 4,546,128

Step by Step Solution

1. Step 1: Write the proportion equation
   3,090,311 : 4,546,128 = 4,546,128 : x
2. Step 2: Convert to fraction form
   3,090,311/4,546,128 = 4,546,128/x
3. Step 3: Cross multiply
   3,090,311x = 4,546,128 × 4,546,128
4. Step 4: Simplify right side
   3,090,311x = 20,667,279,792,384
5. Step 5: Solve for x
   x = 20,667,279,792,384/3,090,311
6. Step 6: Final answer
   x = 6,687,766.96