Finding the Third Proportional to 858,538 and 1,359,158

Step by Step Solution

1. Step 1: Write the proportion equation
   858,538 : 1,359,158 = 1,359,158 : x
2. Step 2: Convert to fraction form
   858,538/1,359,158 = 1,359,158/x
3. Step 3: Cross multiply
   858,538x = 1,359,158 × 1,359,158
4. Step 4: Simplify right side
   858,538x = 1,847,310,468,964
5. Step 5: Solve for x
   x = 1,847,310,468,964/858,538
6. Step 6: Final answer
   x = 2,151,693.31