Finding the Third Proportional to 691,142 and 1,081,859

Step by Step Solution

1. Step 1: Write the proportion equation
   691,142 : 1,081,859 = 1,081,859 : x
2. Step 2: Convert to fraction form
   691,142/1,081,859 = 1,081,859/x
3. Step 3: Cross multiply
   691,142x = 1,081,859 × 1,081,859
4. Step 4: Simplify right side
   691,142x = 1,170,418,895,881
5. Step 5: Solve for x
   x = 1,170,418,895,881/691,142
6. Step 6: Final answer
   x = 1,693,456.48