Finding the Third Proportional to 1,398,528 and 2,138,496

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398,528 : 2,138,496 = 2,138,496 : x
2. Step 2: Convert to fraction form
   1,398,528/2,138,496 = 2,138,496/x
3. Step 3: Cross multiply
   1,398,528x = 2,138,496 × 2,138,496
4. Step 4: Simplify right side
   1,398,528x = 4,573,165,142,016
5. Step 5: Solve for x
   x = 4,573,165,142,016/1,398,528
6. Step 6: Final answer
   x = 3,269,984.69