Finding the Third Proportional to 435,734 and 666,142

Step by Step Solution

1. Step 1: Write the proportion equation
   435,734 : 666,142 = 666,142 : x
2. Step 2: Convert to fraction form
   435,734/666,142 = 666,142/x
3. Step 3: Cross multiply
   435,734x = 666,142 × 666,142
4. Step 4: Simplify right side
   435,734x = 443,745,164,164
5. Step 5: Solve for x
   x = 443,745,164,164/435,734
6. Step 6: Final answer
   x = 1,018,385.45