Finding the Third Proportional to 642,410 and 1,383,484

Step by Step Solution

1. Step 1: Write the proportion equation
   642,410 : 1,383,484 = 1,383,484 : x
2. Step 2: Convert to fraction form
   642,410/1,383,484 = 1,383,484/x
3. Step 3: Cross multiply
   642,410x = 1,383,484 × 1,383,484
4. Step 4: Simplify right side
   642,410x = 1,914,027,978,256
5. Step 5: Solve for x
   x = 1,914,027,978,256/642,410
6. Step 6: Final answer
   x = 2,979,449.23