Finding the Third Proportional to 620,804,744 and 863,171,004

Step by Step Solution

1. Step 1: Write the proportion equation
   620,804,744 : 863,171,004 = 863,171,004 : x
2. Step 2: Convert to fraction form
   620,804,744/863,171,004 = 863,171,004/x
3. Step 3: Cross multiply
   620,804,744x = 863,171,004 × 863,171,004
4. Step 4: Simplify right side
   620,804,744x = 745,064,182,146,368,000
5. Step 5: Solve for x
   x = 745,064,182,146,368,000/620,804,744
6. Step 6: Final answer
   x = 1,200,158,647.86