Finding the Third Proportional to 858,031 and 1,282,510

Step by Step Solution

1. Step 1: Write the proportion equation
   858,031 : 1,282,510 = 1,282,510 : x
2. Step 2: Convert to fraction form
   858,031/1,282,510 = 1,282,510/x
3. Step 3: Cross multiply
   858,031x = 1,282,510 × 1,282,510
4. Step 4: Simplify right side
   858,031x = 1,644,831,900,100
5. Step 5: Solve for x
   x = 1,644,831,900,100/858,031
6. Step 6: Final answer
   x = 1,916,984.23