Finding the Third Proportional to 88,679 and 188,860

Step by Step Solution

1. Step 1: Write the proportion equation
   88,679 : 188,860 = 188,860 : x
2. Step 2: Convert to fraction form
   88,679/188,860 = 188,860/x
3. Step 3: Cross multiply
   88,679x = 188,860 × 188,860
4. Step 4: Simplify right side
   88,679x = 35,668,099,600
5. Step 5: Solve for x
   x = 35,668,099,600/88,679
6. Step 6: Final answer
   x = 402,215.85