Finding the Third Proportional to 840,798 and 1,269,945

Step by Step Solution

1. Step 1: Write the proportion equation
   840,798 : 1,269,945 = 1,269,945 : x
2. Step 2: Convert to fraction form
   840,798/1,269,945 = 1,269,945/x
3. Step 3: Cross multiply
   840,798x = 1,269,945 × 1,269,945
4. Step 4: Simplify right side
   840,798x = 1,612,760,303,025
5. Step 5: Solve for x
   x = 1,612,760,303,025/840,798
6. Step 6: Final answer
   x = 1,918,130.52