Finding the Third Proportional to 149,215.50 and 225,990

Step by Step Solution

1. Step 1: Write the proportion equation
   149,215.50 : 225,990 = 225,990 : x
2. Step 2: Convert to fraction form
   149,215.50/225,990 = 225,990/x
3. Step 3: Cross multiply
   149,215.50x = 225,990 × 225,990
4. Step 4: Simplify right side
   149,215.50x = 51,071,480,100
5. Step 5: Solve for x
   x = 51,071,480,100/149,215.50
6. Step 6: Final answer
   x = 342,266.59