Finding the Third Proportional to 363,910 and 789,980

Step by Step Solution

1. Step 1: Write the proportion equation
   363,910 : 789,980 = 789,980 : x
2. Step 2: Convert to fraction form
   363,910/789,980 = 789,980/x
3. Step 3: Cross multiply
   363,910x = 789,980 × 789,980
4. Step 4: Simplify right side
   363,910x = 624,068,400,400
5. Step 5: Solve for x
   x = 624,068,400,400/363,910
6. Step 6: Final answer
   x = 1,714,897.64