Finding the Third Proportional to 343,279.69 and 717,928.31

Step by Step Solution

1. Step 1: Write the proportion equation
   343,279.69 : 717,928.31 = 717,928.31 : x
2. Step 2: Convert to fraction form
   343,279.69/717,928.31 = 717,928.31/x
3. Step 3: Cross multiply
   343,279.69x = 717,928.31 × 717,928.31
4. Step 4: Simplify right side
   343,279.69x = 515,421,061,889.10
5. Step 5: Solve for x
   x = 515,421,061,889.10/343,279.69
6. Step 6: Final answer
   x = 1,501,461.00