Finding the Third Proportional to 988,672 and 2,158,568

Step by Step Solution

1. Step 1: Write the proportion equation
   988,672 : 2,158,568 = 2,158,568 : x
2. Step 2: Convert to fraction form
   988,672/2,158,568 = 2,158,568/x
3. Step 3: Cross multiply
   988,672x = 2,158,568 × 2,158,568
4. Step 4: Simplify right side
   988,672x = 4,659,415,810,624
5. Step 5: Solve for x
   x = 4,659,415,810,624/988,672
6. Step 6: Final answer
   x = 4,712,802.44