Finding the Third Proportional to 434,081 and 672,060

Step by Step Solution

1. Step 1: Write the proportion equation
   434,081 : 672,060 = 672,060 : x
2. Step 2: Convert to fraction form
   434,081/672,060 = 672,060/x
3. Step 3: Cross multiply
   434,081x = 672,060 × 672,060
4. Step 4: Simplify right side
   434,081x = 451,664,643,600
5. Step 5: Solve for x
   x = 451,664,643,600/434,081
6. Step 6: Final answer
   x = 1,040,507.75