Finding the Third Proportional to 1,398,798 and 2,103,390

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398,798 : 2,103,390 = 2,103,390 : x
2. Step 2: Convert to fraction form
   1,398,798/2,103,390 = 2,103,390/x
3. Step 3: Cross multiply
   1,398,798x = 2,103,390 × 2,103,390
4. Step 4: Simplify right side
   1,398,798x = 4,424,249,492,100
5. Step 5: Solve for x
   x = 4,424,249,492,100/1,398,798
6. Step 6: Final answer
   x = 3,162,893.78