Finding the Third Proportional to 152,980 and 328,105

Step by Step Solution

1. Step 1: Write the proportion equation
   152,980 : 328,105 = 328,105 : x
2. Step 2: Convert to fraction form
   152,980/328,105 = 328,105/x
3. Step 3: Cross multiply
   152,980x = 328,105 × 328,105
4. Step 4: Simplify right side
   152,980x = 107,652,891,025
5. Step 5: Solve for x
   x = 107,652,891,025/152,980
6. Step 6: Final answer
   x = 703,705.65