Finding the Third Proportional to 300,015 and 422,010

Step by Step Solution

1. Step 1: Write the proportion equation
   300,015 : 422,010 = 422,010 : x
2. Step 2: Convert to fraction form
   300,015/422,010 = 422,010/x
3. Step 3: Cross multiply
   300,015x = 422,010 × 422,010
4. Step 4: Simplify right side
   300,015x = 178,092,440,100
5. Step 5: Solve for x
   x = 178,092,440,100/300,015
6. Step 6: Final answer
   x = 593,611.79