Finding the Third Proportional to 1,018,393 and 2,119,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,393 : 2,119,640 = 2,119,640 : x
2. Step 2: Convert to fraction form
   1,018,393/2,119,640 = 2,119,640/x
3. Step 3: Cross multiply
   1,018,393x = 2,119,640 × 2,119,640
4. Step 4: Simplify right side
   1,018,393x = 4,492,873,729,600
5. Step 5: Solve for x
   x = 4,492,873,729,600/1,018,393
6. Step 6: Final answer
   x = 4,411,728.80