Finding the Third Proportional to 1,372,638 and 2,069,760

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372,638 : 2,069,760 = 2,069,760 : x
2. Step 2: Convert to fraction form
   1,372,638/2,069,760 = 2,069,760/x
3. Step 3: Cross multiply
   1,372,638x = 2,069,760 × 2,069,760
4. Step 4: Simplify right side
   1,372,638x = 4,283,906,457,600
5. Step 5: Solve for x
   x = 4,283,906,457,600/1,372,638
6. Step 6: Final answer
   x = 3,120,929.52