Finding the Third Proportional to 89,808 and 188,913

Step by Step Solution

1. Step 1: Write the proportion equation
   89,808 : 188,913 = 188,913 : x
2. Step 2: Convert to fraction form
   89,808/188,913 = 188,913/x
3. Step 3: Cross multiply
   89,808x = 188,913 × 188,913
4. Step 4: Simplify right side
   89,808x = 35,688,121,569
5. Step 5: Solve for x
   x = 35,688,121,569/89,808
6. Step 6: Final answer
   x = 397,382.43