Finding the Third Proportional to 2,128,280 and 3,214,512

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,280 : 3,214,512 = 3,214,512 : x
2. Step 2: Convert to fraction form
   2,128,280/3,214,512 = 3,214,512/x
3. Step 3: Cross multiply
   2,128,280x = 3,214,512 × 3,214,512
4. Step 4: Simplify right side
   2,128,280x = 10,333,087,398,144
5. Step 5: Solve for x
   x = 10,333,087,398,144/2,128,280
6. Step 6: Final answer
   x = 4,855,135.32