Finding the Third Proportional to 69,162 and 140,858

Step by Step Solution

1. Step 1: Write the proportion equation
   69,162 : 140,858 = 140,858 : x
2. Step 2: Convert to fraction form
   69,162/140,858 = 140,858/x
3. Step 3: Cross multiply
   69,162x = 140,858 × 140,858
4. Step 4: Simplify right side
   69,162x = 19,840,976,164
5. Step 5: Solve for x
   x = 19,840,976,164/69,162
6. Step 6: Final answer
   x = 286,876.84