Finding the Third Proportional to 809,142 and 1,165,545

Step by Step Solution

1. Step 1: Write the proportion equation
   809,142 : 1,165,545 = 1,165,545 : x
2. Step 2: Convert to fraction form
   809,142/1,165,545 = 1,165,545/x
3. Step 3: Cross multiply
   809,142x = 1,165,545 × 1,165,545
4. Step 4: Simplify right side
   809,142x = 1,358,495,147,025
5. Step 5: Solve for x
   x = 1,358,495,147,025/809,142
6. Step 6: Final answer
   x = 1,678,932.93