Finding the Third Proportional to 316,612 and 666,024

Step by Step Solution

1. Step 1: Write the proportion equation
   316,612 : 666,024 = 666,024 : x
2. Step 2: Convert to fraction form
   316,612/666,024 = 666,024/x
3. Step 3: Cross multiply
   316,612x = 666,024 × 666,024
4. Step 4: Simplify right side
   316,612x = 443,587,968,576
5. Step 5: Solve for x
   x = 443,587,968,576/316,612
6. Step 6: Final answer
   x = 1,401,045.98