Finding the Third Proportional to 328,978 and 707,852

Step by Step Solution

1. Step 1: Write the proportion equation
   328,978 : 707,852 = 707,852 : x
2. Step 2: Convert to fraction form
   328,978/707,852 = 707,852/x
3. Step 3: Cross multiply
   328,978x = 707,852 × 707,852
4. Step 4: Simplify right side
   328,978x = 501,054,453,904
5. Step 5: Solve for x
   x = 501,054,453,904/328,978
6. Step 6: Final answer
   x = 1,523,063.71