Finding the Third Proportional to 642,852 and 1,382,454

Step by Step Solution

1. Step 1: Write the proportion equation
   642,852 : 1,382,454 = 1,382,454 : x
2. Step 2: Convert to fraction form
   642,852/1,382,454 = 1,382,454/x
3. Step 3: Cross multiply
   642,852x = 1,382,454 × 1,382,454
4. Step 4: Simplify right side
   642,852x = 1,911,179,062,116
5. Step 5: Solve for x
   x = 1,911,179,062,116/642,852
6. Step 6: Final answer
   x = 2,972,968.99