Finding the Third Proportional to 876,409 and 1,311,112

Step by Step Solution

1. Step 1: Write the proportion equation
   876,409 : 1,311,112 = 1,311,112 : x
2. Step 2: Convert to fraction form
   876,409/1,311,112 = 1,311,112/x
3. Step 3: Cross multiply
   876,409x = 1,311,112 × 1,311,112
4. Step 4: Simplify right side
   876,409x = 1,719,014,676,544
5. Step 5: Solve for x
   x = 1,719,014,676,544/876,409
6. Step 6: Final answer
   x = 1,961,429.74