Finding the Third Proportional to 2,151,936 and 4,660,128

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151,936 : 4,660,128 = 4,660,128 : x
2. Step 2: Convert to fraction form
   2,151,936/4,660,128 = 4,660,128/x
3. Step 3: Cross multiply
   2,151,936x = 4,660,128 × 4,660,128
4. Step 4: Simplify right side
   2,151,936x = 21,716,792,976,384
5. Step 5: Solve for x
   x = 21,716,792,976,384/2,151,936
6. Step 6: Final answer
   x = 10,091,746.68