Finding the Third Proportional to 250,209 and 388,008

Step by Step Solution

1. Step 1: Write the proportion equation
   250,209 : 388,008 = 388,008 : x
2. Step 2: Convert to fraction form
   250,209/388,008 = 388,008/x
3. Step 3: Cross multiply
   250,209x = 388,008 × 388,008
4. Step 4: Simplify right side
   250,209x = 150,550,208,064
5. Step 5: Solve for x
   x = 150,550,208,064/250,209
6. Step 6: Final answer
   x = 601,697.81