Finding the Third Proportional to 1,018,722 and 1,378,607

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,722 : 1,378,607 = 1,378,607 : x
2. Step 2: Convert to fraction form
   1,018,722/1,378,607 = 1,378,607/x
3. Step 3: Cross multiply
   1,018,722x = 1,378,607 × 1,378,607
4. Step 4: Simplify right side
   1,018,722x = 1,900,557,260,449
5. Step 5: Solve for x
   x = 1,900,557,260,449/1,018,722
6. Step 6: Final answer
   x = 1,865,628.96