Finding the Third Proportional to 89,705 and 188,704

Step by Step Solution

1. Step 1: Write the proportion equation
   89,705 : 188,704 = 188,704 : x
2. Step 2: Convert to fraction form
   89,705/188,704 = 188,704/x
3. Step 3: Cross multiply
   89,705x = 188,704 × 188,704
4. Step 4: Simplify right side
   89,705x = 35,609,199,616
5. Step 5: Solve for x
   x = 35,609,199,616/89,705
6. Step 6: Final answer
   x = 396,958.92