Finding the Third Proportional to 809,436 and 1,169,402

Step by Step Solution

1. Step 1: Write the proportion equation
   809,436 : 1,169,402 = 1,169,402 : x
2. Step 2: Convert to fraction form
   809,436/1,169,402 = 1,169,402/x
3. Step 3: Cross multiply
   809,436x = 1,169,402 × 1,169,402
4. Step 4: Simplify right side
   809,436x = 1,367,501,037,604
5. Step 5: Solve for x
   x = 1,367,501,037,604/809,436
6. Step 6: Final answer
   x = 1,689,449.24