Finding the Third Proportional to 1,005,356 and 2,168,128

Step by Step Solution

1. Step 1: Write the proportion equation
   1,005,356 : 2,168,128 = 2,168,128 : x
2. Step 2: Convert to fraction form
   1,005,356/2,168,128 = 2,168,128/x
3. Step 3: Cross multiply
   1,005,356x = 2,168,128 × 2,168,128
4. Step 4: Simplify right side
   1,005,356x = 4,700,779,024,384
5. Step 5: Solve for x
   x = 4,700,779,024,384/1,005,356
6. Step 6: Final answer
   x = 4,675,735.78