Finding the Third Proportional to 328,238 and 712,496

Step by Step Solution

1. Step 1: Write the proportion equation
   328,238 : 712,496 = 712,496 : x
2. Step 2: Convert to fraction form
   328,238/712,496 = 712,496/x
3. Step 3: Cross multiply
   328,238x = 712,496 × 712,496
4. Step 4: Simplify right side
   328,238x = 507,650,550,016
5. Step 5: Solve for x
   x = 507,650,550,016/328,238
6. Step 6: Final answer
   x = 1,546,592.87