Finding the Third Proportional to 858,680 and 1,129,476

Step by Step Solution

1. Step 1: Write the proportion equation
   858,680 : 1,129,476 = 1,129,476 : x
2. Step 2: Convert to fraction form
   858,680/1,129,476 = 1,129,476/x
3. Step 3: Cross multiply
   858,680x = 1,129,476 × 1,129,476
4. Step 4: Simplify right side
   858,680x = 1,275,716,034,576
5. Step 5: Solve for x
   x = 1,275,716,034,576/858,680
6. Step 6: Final answer
   x = 1,485,671.07