Finding the Third Proportional to 856,872 and 1,878,759

Step by Step Solution

1. Step 1: Write the proportion equation
   856,872 : 1,878,759 = 1,878,759 : x
2. Step 2: Convert to fraction form
   856,872/1,878,759 = 1,878,759/x
3. Step 3: Cross multiply
   856,872x = 1,878,759 × 1,878,759
4. Step 4: Simplify right side
   856,872x = 3,529,735,380,081
5. Step 5: Solve for x
   x = 3,529,735,380,081/856,872
6. Step 6: Final answer
   x = 4,119,326.32