Finding the Third Proportional to 152,504 and 220,008

Step by Step Solution

1. Step 1: Write the proportion equation
   152,504 : 220,008 = 220,008 : x
2. Step 2: Convert to fraction form
   152,504/220,008 = 220,008/x
3. Step 3: Cross multiply
   152,504x = 220,008 × 220,008
4. Step 4: Simplify right side
   152,504x = 48,403,520,064
5. Step 5: Solve for x
   x = 48,403,520,064/152,504
6. Step 6: Final answer
   x = 317,391.81