Finding the Third Proportional to 861,144 and 1,281,876

Step by Step Solution

1. Step 1: Write the proportion equation
   861,144 : 1,281,876 = 1,281,876 : x
2. Step 2: Convert to fraction form
   861,144/1,281,876 = 1,281,876/x
3. Step 3: Cross multiply
   861,144x = 1,281,876 × 1,281,876
4. Step 4: Simplify right side
   861,144x = 1,643,206,079,376
5. Step 5: Solve for x
   x = 1,643,206,079,376/861,144
6. Step 6: Final answer
   x = 1,908,166.44