Finding the Third Proportional to 328,662 and 707,130

Step by Step Solution

1. Step 1: Write the proportion equation
   328,662 : 707,130 = 707,130 : x
2. Step 2: Convert to fraction form
   328,662/707,130 = 707,130/x
3. Step 3: Cross multiply
   328,662x = 707,130 × 707,130
4. Step 4: Simplify right side
   328,662x = 500,032,836,900
5. Step 5: Solve for x
   x = 500,032,836,900/328,662
6. Step 6: Final answer
   x = 1,521,419.69