Finding the Third Proportional to 324,555 and 499,168.50

Step by Step Solution

1. Step 1: Write the proportion equation
   324,555 : 499,168.50 = 499,168.50 : x
2. Step 2: Convert to fraction form
   324,555/499,168.50 = 499,168.50/x
3. Step 3: Cross multiply
   324,555x = 499,168.50 × 499,168.50
4. Step 4: Simplify right side
   324,555x = 249,169,191,392.25
5. Step 5: Solve for x
   x = 249,169,191,392.25/324,555
6. Step 6: Final answer
   x = 767,725.63