Finding the Third Proportional to 1,008,638 and 2,185,380

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008,638 : 2,185,380 = 2,185,380 : x
2. Step 2: Convert to fraction form
   1,008,638/2,185,380 = 2,185,380/x
3. Step 3: Cross multiply
   1,008,638x = 2,185,380 × 2,185,380
4. Step 4: Simplify right side
   1,008,638x = 4,775,885,744,400
5. Step 5: Solve for x
   x = 4,775,885,744,400/1,008,638
6. Step 6: Final answer
   x = 4,734,984.94