Finding the Third Proportional to 1,900,828 and 3,936,391

Step by Step Solution

1. Step 1: Write the proportion equation
   1,900,828 : 3,936,391 = 3,936,391 : x
2. Step 2: Convert to fraction form
   1,900,828/3,936,391 = 3,936,391/x
3. Step 3: Cross multiply
   1,900,828x = 3,936,391 × 3,936,391
4. Step 4: Simplify right side
   1,900,828x = 15,495,174,104,881
5. Step 5: Solve for x
   x = 15,495,174,104,881/1,900,828
6. Step 6: Final answer
   x = 8,151,802.32