Finding the Third Proportional to 69,151 and 140,839

Step by Step Solution

1. Step 1: Write the proportion equation
   69,151 : 140,839 = 140,839 : x
2. Step 2: Convert to fraction form
   69,151/140,839 = 140,839/x
3. Step 3: Cross multiply
   69,151x = 140,839 × 140,839
4. Step 4: Simplify right side
   69,151x = 19,835,623,921
5. Step 5: Solve for x
   x = 19,835,623,921/69,151
6. Step 6: Final answer
   x = 286,845.08