Finding the Third Proportional to 2,100,618 and 4,581,460

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100,618 : 4,581,460 = 4,581,460 : x
2. Step 2: Convert to fraction form
   2,100,618/4,581,460 = 4,581,460/x
3. Step 3: Cross multiply
   2,100,618x = 4,581,460 × 4,581,460
4. Step 4: Simplify right side
   2,100,618x = 20,989,775,731,600
5. Step 5: Solve for x
   x = 20,989,775,731,600/2,100,618
6. Step 6: Final answer
   x = 9,992,190.74