Finding the Third Proportional to 404,072 and 606,108

Step by Step Solution

1. Step 1: Write the proportion equation
   404,072 : 606,108 = 606,108 : x
2. Step 2: Convert to fraction form
   404,072/606,108 = 606,108/x
3. Step 3: Cross multiply
   404,072x = 606,108 × 606,108
4. Step 4: Simplify right side
   404,072x = 367,366,907,664
5. Step 5: Solve for x
   x = 367,366,907,664/404,072
6. Step 6: Final answer
   x = 909,162