Finding the Third Proportional to 356,479.50 and 543,698

Step by Step Solution

1. Step 1: Write the proportion equation
   356,479.50 : 543,698 = 543,698 : x
2. Step 2: Convert to fraction form
   356,479.50/543,698 = 543,698/x
3. Step 3: Cross multiply
   356,479.50x = 543,698 × 543,698
4. Step 4: Simplify right side
   356,479.50x = 295,607,515,204
5. Step 5: Solve for x
   x = 295,607,515,204/356,479.50
6. Step 6: Final answer
   x = 829,241.28