Finding the Third Proportional to 1,290,862 and 2,805,607

Step by Step Solution

1. Step 1: Write the proportion equation
   1,290,862 : 2,805,607 = 2,805,607 : x
2. Step 2: Convert to fraction form
   1,290,862/2,805,607 = 2,805,607/x
3. Step 3: Cross multiply
   1,290,862x = 2,805,607 × 2,805,607
4. Step 4: Simplify right side
   1,290,862x = 7,871,430,638,449
5. Step 5: Solve for x
   x = 7,871,430,638,449/1,290,862
6. Step 6: Final answer
   x = 6,097,809.56