Finding the Third Proportional to 259,004 and 400,008

Step by Step Solution

1. Step 1: Write the proportion equation
   259,004 : 400,008 = 400,008 : x
2. Step 2: Convert to fraction form
   259,004/400,008 = 400,008/x
3. Step 3: Cross multiply
   259,004x = 400,008 × 400,008
4. Step 4: Simplify right side
   259,004x = 160,006,400,064
5. Step 5: Solve for x
   x = 160,006,400,064/259,004
6. Step 6: Final answer
   x = 617,775.79