Finding the Third Proportional to 858,123 and 1,165,442

Step by Step Solution

1. Step 1: Write the proportion equation
   858,123 : 1,165,442 = 1,165,442 : x
2. Step 2: Convert to fraction form
   858,123/1,165,442 = 1,165,442/x
3. Step 3: Cross multiply
   858,123x = 1,165,442 × 1,165,442
4. Step 4: Simplify right side
   858,123x = 1,358,255,055,364
5. Step 5: Solve for x
   x = 1,358,255,055,364/858,123
6. Step 6: Final answer
   x = 1,582,820.94