Finding the Third Proportional to 764,838 and 1,578,798

Step by Step Solution

1. Step 1: Write the proportion equation
   764,838 : 1,578,798 = 1,578,798 : x
2. Step 2: Convert to fraction form
   764,838/1,578,798 = 1,578,798/x
3. Step 3: Cross multiply
   764,838x = 1,578,798 × 1,578,798
4. Step 4: Simplify right side
   764,838x = 2,492,603,124,804
5. Step 5: Solve for x
   x = 2,492,603,124,804/764,838
6. Step 6: Final answer
   x = 3,258,994.88