Finding the Third Proportional to 69,158 and 140,850

Step by Step Solution

1. Step 1: Write the proportion equation
   69,158 : 140,850 = 140,850 : x
2. Step 2: Convert to fraction form
   69,158/140,850 = 140,850/x
3. Step 3: Cross multiply
   69,158x = 140,850 × 140,850
4. Step 4: Simplify right side
   69,158x = 19,838,722,500
5. Step 5: Solve for x
   x = 19,838,722,500/69,158
6. Step 6: Final answer
   x = 286,860.85