Finding the Third Proportional to 434,601.50 and 672,367.50

Step by Step Solution

1. Step 1: Write the proportion equation
   434,601.50 : 672,367.50 = 672,367.50 : x
2. Step 2: Convert to fraction form
   434,601.50/672,367.50 = 672,367.50/x
3. Step 3: Cross multiply
   434,601.50x = 672,367.50 × 672,367.50
4. Step 4: Simplify right side
   434,601.50x = 452,078,055,056.25
5. Step 5: Solve for x
   x = 452,078,055,056.25/434,601.50
6. Step 6: Final answer
   x = 1,040,212.83