Finding the Third Proportional to 820,884 and 1,187,820

Step by Step Solution

1. Step 1: Write the proportion equation
   820,884 : 1,187,820 = 1,187,820 : x
2. Step 2: Convert to fraction form
   820,884/1,187,820 = 1,187,820/x
3. Step 3: Cross multiply
   820,884x = 1,187,820 × 1,187,820
4. Step 4: Simplify right side
   820,884x = 1,410,916,352,400
5. Step 5: Solve for x
   x = 1,410,916,352,400/820,884
6. Step 6: Final answer
   x = 1,718,776.77