Finding the Third Proportional to 72,905 and 158,986

Step by Step Solution

1. Step 1: Write the proportion equation
   72,905 : 158,986 = 158,986 : x
2. Step 2: Convert to fraction form
   72,905/158,986 = 158,986/x
3. Step 3: Cross multiply
   72,905x = 158,986 × 158,986
4. Step 4: Simplify right side
   72,905x = 25,276,548,196
5. Step 5: Solve for x
   x = 25,276,548,196/72,905
6. Step 6: Final answer
   x = 346,705.28