Finding the Third Proportional to 89,722 and 188,739.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,722 : 188,739.50 = 188,739.50 : x
2. Step 2: Convert to fraction form
   89,722/188,739.50 = 188,739.50/x
3. Step 3: Cross multiply
   89,722x = 188,739.50 × 188,739.50
4. Step 4: Simplify right side
   89,722x = 35,622,598,860.25
5. Step 5: Solve for x
   x = 35,622,598,860.25/89,722
6. Step 6: Final answer
   x = 397,033.04