Finding the Third Proportional to 853,166 and 1,288,820

Step by Step Solution

1. Step 1: Write the proportion equation
   853,166 : 1,288,820 = 1,288,820 : x
2. Step 2: Convert to fraction form
   853,166/1,288,820 = 1,288,820/x
3. Step 3: Cross multiply
   853,166x = 1,288,820 × 1,288,820
4. Step 4: Simplify right side
   853,166x = 1,661,056,992,400
5. Step 5: Solve for x
   x = 1,661,056,992,400/853,166
6. Step 6: Final answer
   x = 1,946,932.94