Finding the Third Proportional to 2,181,225 and 4,642,386

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181,225 : 4,642,386 = 4,642,386 : x
2. Step 2: Convert to fraction form
   2,181,225/4,642,386 = 4,642,386/x
3. Step 3: Cross multiply
   2,181,225x = 4,642,386 × 4,642,386
4. Step 4: Simplify right side
   2,181,225x = 21,551,747,772,996
5. Step 5: Solve for x
   x = 21,551,747,772,996/2,181,225
6. Step 6: Final answer
   x = 9,880,570.68