Finding the Third Proportional to 300,514.50 and 429,708.38

Step by Step Solution

1. Step 1: Write the proportion equation
   300,514.50 : 429,708.38 = 429,708.38 : x
2. Step 2: Convert to fraction form
   300,514.50/429,708.38 = 429,708.38/x
3. Step 3: Cross multiply
   300,514.50x = 429,708.38 × 429,708.38
4. Step 4: Simplify right side
   300,514.50x = 184,649,287,545.14
5. Step 5: Solve for x
   x = 184,649,287,545.14/300,514.50
6. Step 6: Final answer
   x = 614,443.85