Finding the Third Proportional to 2,207,679 and 4,887,507

Step by Step Solution

1. Step 1: Write the proportion equation
   2,207,679 : 4,887,507 = 4,887,507 : x
2. Step 2: Convert to fraction form
   2,207,679/4,887,507 = 4,887,507/x
3. Step 3: Cross multiply
   2,207,679x = 4,887,507 × 4,887,507
4. Step 4: Simplify right side
   2,207,679x = 23,887,724,675,049
5. Step 5: Solve for x
   x = 23,887,724,675,049/2,207,679
6. Step 6: Final answer
   x = 10,820,288.94