Finding the Third Proportional to 365,078 and 798,978

Step by Step Solution

1. Step 1: Write the proportion equation
   365,078 : 798,978 = 798,978 : x
2. Step 2: Convert to fraction form
   365,078/798,978 = 798,978/x
3. Step 3: Cross multiply
   365,078x = 798,978 × 798,978
4. Step 4: Simplify right side
   365,078x = 638,365,844,484
5. Step 5: Solve for x
   x = 638,365,844,484/365,078
6. Step 6: Final answer
   x = 1,748,573.85