Finding the Third Proportional to 1,687,644 and 2,254,392

Step by Step Solution

1. Step 1: Write the proportion equation
   1,687,644 : 2,254,392 = 2,254,392 : x
2. Step 2: Convert to fraction form
   1,687,644/2,254,392 = 2,254,392/x
3. Step 3: Cross multiply
   1,687,644x = 2,254,392 × 2,254,392
4. Step 4: Simplify right side
   1,687,644x = 5,082,283,289,664
5. Step 5: Solve for x
   x = 5,082,283,289,664/1,687,644
6. Step 6: Final answer
   x = 3,011,466.45