Finding the Third Proportional to 1,918,788 and 4,198,089

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918,788 : 4,198,089 = 4,198,089 : x
2. Step 2: Convert to fraction form
   1,918,788/4,198,089 = 4,198,089/x
3. Step 3: Cross multiply
   1,918,788x = 4,198,089 × 4,198,089
4. Step 4: Simplify right side
   1,918,788x = 17,623,951,251,921
5. Step 5: Solve for x
   x = 17,623,951,251,921/1,918,788
6. Step 6: Final answer
   x = 9,184,939.27