Finding the Third Proportional to 69,036 and 140,970

Step by Step Solution

1. Step 1: Write the proportion equation
   69,036 : 140,970 = 140,970 : x
2. Step 2: Convert to fraction form
   69,036/140,970 = 140,970/x
3. Step 3: Cross multiply
   69,036x = 140,970 × 140,970
4. Step 4: Simplify right side
   69,036x = 19,872,540,900
5. Step 5: Solve for x
   x = 19,872,540,900/69,036
6. Step 6: Final answer
   x = 287,857.65