Finding the Third Proportional to 3,428,760 and 4,670,128

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428,760 : 4,670,128 = 4,670,128 : x
2. Step 2: Convert to fraction form
   3,428,760/4,670,128 = 4,670,128/x
3. Step 3: Cross multiply
   3,428,760x = 4,670,128 × 4,670,128
4. Step 4: Simplify right side
   3,428,760x = 21,810,095,536,384
5. Step 5: Solve for x
   x = 21,810,095,536,384/3,428,760
6. Step 6: Final answer
   x = 6,360,928.01