Finding the Third Proportional to 84,689 and 123,853

Step by Step Solution

1. Step 1: Write the proportion equation
   84,689 : 123,853 = 123,853 : x
2. Step 2: Convert to fraction form
   84,689/123,853 = 123,853/x
3. Step 3: Cross multiply
   84,689x = 123,853 × 123,853
4. Step 4: Simplify right side
   84,689x = 15,339,565,609
5. Step 5: Solve for x
   x = 15,339,565,609/84,689
6. Step 6: Final answer
   x = 181,128.19