Finding the Third Proportional to 343,279.69 and 717,930

Step by Step Solution

1. Step 1: Write the proportion equation
   343,279.69 : 717,930 = 717,930 : x
2. Step 2: Convert to fraction form
   343,279.69/717,930 = 717,930/x
3. Step 3: Cross multiply
   343,279.69x = 717,930 × 717,930
4. Step 4: Simplify right side
   343,279.69x = 515,423,484,900
5. Step 5: Solve for x
   x = 515,423,484,900/343,279.69
6. Step 6: Final answer
   x = 1,501,468.06