Finding the Third Proportional to 149,605.50 and 218,622

Step by Step Solution

1. Step 1: Write the proportion equation
   149,605.50 : 218,622 = 218,622 : x
2. Step 2: Convert to fraction form
   149,605.50/218,622 = 218,622/x
3. Step 3: Cross multiply
   149,605.50x = 218,622 × 218,622
4. Step 4: Simplify right side
   149,605.50x = 47,795,578,884
5. Step 5: Solve for x
   x = 47,795,578,884/149,605.50
6. Step 6: Final answer
   x = 319,477.42