Finding the Third Proportional to 853,674 and 1,286,142

Step by Step Solution

1. Step 1: Write the proportion equation
   853,674 : 1,286,142 = 1,286,142 : x
2. Step 2: Convert to fraction form
   853,674/1,286,142 = 1,286,142/x
3. Step 3: Cross multiply
   853,674x = 1,286,142 × 1,286,142
4. Step 4: Simplify right side
   853,674x = 1,654,161,244,164
5. Step 5: Solve for x
   x = 1,654,161,244,164/853,674
6. Step 6: Final answer
   x = 1,937,696.64