Finding the Third Proportional to 323,680.50 and 490,019.06

Step by Step Solution

1. Step 1: Write the proportion equation
   323,680.50 : 490,019.06 = 490,019.06 : x
2. Step 2: Convert to fraction form
   323,680.50/490,019.06 = 490,019.06/x
3. Step 3: Cross multiply
   323,680.50x = 490,019.06 × 490,019.06
4. Step 4: Simplify right side
   323,680.50x = 240,118,681,613.38
5. Step 5: Solve for x
   x = 240,118,681,613.38/323,680.50
6. Step 6: Final answer
   x = 741,838.58