Finding the Third Proportional to 666,507 and 1,431,510

Step by Step Solution

1. Step 1: Write the proportion equation
   666,507 : 1,431,510 = 1,431,510 : x
2. Step 2: Convert to fraction form
   666,507/1,431,510 = 1,431,510/x
3. Step 3: Cross multiply
   666,507x = 1,431,510 × 1,431,510
4. Step 4: Simplify right side
   666,507x = 2,049,220,880,100
5. Step 5: Solve for x
   x = 2,049,220,880,100/666,507
6. Step 6: Final answer
   x = 3,074,567.68