Finding the Third Proportional to 363,904 and 789,656

Step by Step Solution

1. Step 1: Write the proportion equation
   363,904 : 789,656 = 789,656 : x
2. Step 2: Convert to fraction form
   363,904/789,656 = 789,656/x
3. Step 3: Cross multiply
   363,904x = 789,656 × 789,656
4. Step 4: Simplify right side
   363,904x = 623,556,598,336
5. Step 5: Solve for x
   x = 623,556,598,336/363,904
6. Step 6: Final answer
   x = 1,713,519.50