Finding the Third Proportional to 870,834 and 1,345,078

Step by Step Solution

1. Step 1: Write the proportion equation
   870,834 : 1,345,078 = 1,345,078 : x
2. Step 2: Convert to fraction form
   870,834/1,345,078 = 1,345,078/x
3. Step 3: Cross multiply
   870,834x = 1,345,078 × 1,345,078
4. Step 4: Simplify right side
   870,834x = 1,809,234,826,084
5. Step 5: Solve for x
   x = 1,809,234,826,084/870,834
6. Step 6: Final answer
   x = 2,077,588.64