Finding the Third Proportional to 691,139 and 1,081,854

Step by Step Solution

1. Step 1: Write the proportion equation
   691,139 : 1,081,854 = 1,081,854 : x
2. Step 2: Convert to fraction form
   691,139/1,081,854 = 1,081,854/x
3. Step 3: Cross multiply
   691,139x = 1,081,854 × 1,081,854
4. Step 4: Simplify right side
   691,139x = 1,170,408,077,316
5. Step 5: Solve for x
   x = 1,170,408,077,316/691,139
6. Step 6: Final answer
   x = 1,693,448.17