Finding the Third Proportional to 152,240 and 320,892

Step by Step Solution

1. Step 1: Write the proportion equation
   152,240 : 320,892 = 320,892 : x
2. Step 2: Convert to fraction form
   152,240/320,892 = 320,892/x
3. Step 3: Cross multiply
   152,240x = 320,892 × 320,892
4. Step 4: Simplify right side
   152,240x = 102,971,675,664
5. Step 5: Solve for x
   x = 102,971,675,664/152,240
6. Step 6: Final answer
   x = 676,377.27