Finding the Third Proportional to 1,069,812 and 2,188,809

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069,812 : 2,188,809 = 2,188,809 : x
2. Step 2: Convert to fraction form
   1,069,812/2,188,809 = 2,188,809/x
3. Step 3: Cross multiply
   1,069,812x = 2,188,809 × 2,188,809
4. Step 4: Simplify right side
   1,069,812x = 4,790,884,838,481
5. Step 5: Solve for x
   x = 4,790,884,838,481/1,069,812
6. Step 6: Final answer
   x = 4,478,249.30