Finding the Third Proportional to 328,436 and 708,144

Step by Step Solution

1. Step 1: Write the proportion equation
   328,436 : 708,144 = 708,144 : x
2. Step 2: Convert to fraction form
   328,436/708,144 = 708,144/x
3. Step 3: Cross multiply
   328,436x = 708,144 × 708,144
4. Step 4: Simplify right side
   328,436x = 501,467,924,736
5. Step 5: Solve for x
   x = 501,467,924,736/328,436
6. Step 6: Final answer
   x = 1,526,836.05