Finding the Third Proportional to 151,021 and 328,705

Step by Step Solution

1. Step 1: Write the proportion equation
   151,021 : 328,705 = 328,705 : x
2. Step 2: Convert to fraction form
   151,021/328,705 = 328,705/x
3. Step 3: Cross multiply
   151,021x = 328,705 × 328,705
4. Step 4: Simplify right side
   151,021x = 108,046,977,025
5. Step 5: Solve for x
   x = 108,046,977,025/151,021
6. Step 6: Final answer
   x = 715,443.40