Finding the Third Proportional to 328,396 and 707,456

Step by Step Solution

1. Step 1: Write the proportion equation
   328,396 : 707,456 = 707,456 : x
2. Step 2: Convert to fraction form
   328,396/707,456 = 707,456/x
3. Step 3: Cross multiply
   328,396x = 707,456 × 707,456
4. Step 4: Simplify right side
   328,396x = 500,493,991,936
5. Step 5: Solve for x
   x = 500,493,991,936/328,396
6. Step 6: Final answer
   x = 1,524,056.30