Finding the Third Proportional to 451,393.50 and 685,956

Step by Step Solution

1. Step 1: Write the proportion equation
   451,393.50 : 685,956 = 685,956 : x
2. Step 2: Convert to fraction form
   451,393.50/685,956 = 685,956/x
3. Step 3: Cross multiply
   451,393.50x = 685,956 × 685,956
4. Step 4: Simplify right side
   451,393.50x = 470,535,633,936
5. Step 5: Solve for x
   x = 470,535,633,936/451,393.50
6. Step 6: Final answer
   x = 1,042,406.76