Finding the Third Proportional to 103,689 and 158,810

Step by Step Solution

1. Step 1: Write the proportion equation
   103,689 : 158,810 = 158,810 : x
2. Step 2: Convert to fraction form
   103,689/158,810 = 158,810/x
3. Step 3: Cross multiply
   103,689x = 158,810 × 158,810
4. Step 4: Simplify right side
   103,689x = 25,220,616,100
5. Step 5: Solve for x
   x = 25,220,616,100/103,689
6. Step 6: Final answer
   x = 243,233.29