Finding the Third Proportional to 435,736 and 666,145

Step by Step Solution

1. Step 1: Write the proportion equation
   435,736 : 666,145 = 666,145 : x
2. Step 2: Convert to fraction form
   435,736/666,145 = 666,145/x
3. Step 3: Cross multiply
   435,736x = 666,145 × 666,145
4. Step 4: Simplify right side
   435,736x = 443,749,161,025
5. Step 5: Solve for x
   x = 443,749,161,025/435,736
6. Step 6: Final answer
   x = 1,018,389.94