Finding the Third Proportional to 90,687 and 188,732

Step by Step Solution

1. Step 1: Write the proportion equation
   90,687 : 188,732 = 188,732 : x
2. Step 2: Convert to fraction form
   90,687/188,732 = 188,732/x
3. Step 3: Cross multiply
   90,687x = 188,732 × 188,732
4. Step 4: Simplify right side
   90,687x = 35,619,767,824
5. Step 5: Solve for x
   x = 35,619,767,824/90,687
6. Step 6: Final answer
   x = 392,777.00