Finding the Third Proportional to 789,909 and 1,191,816

Step by Step Solution

1. Step 1: Write the proportion equation
   789,909 : 1,191,816 = 1,191,816 : x
2. Step 2: Convert to fraction form
   789,909/1,191,816 = 1,191,816/x
3. Step 3: Cross multiply
   789,909x = 1,191,816 × 1,191,816
4. Step 4: Simplify right side
   789,909x = 1,420,425,377,856
5. Step 5: Solve for x
   x = 1,420,425,377,856/789,909
6. Step 6: Final answer
   x = 1,798,213.94