Finding the Third Proportional to 190,240 and 449,900

Step by Step Solution

1. Step 1: Write the proportion equation
   190,240 : 449,900 = 449,900 : x
2. Step 2: Convert to fraction form
   190,240/449,900 = 449,900/x
3. Step 3: Cross multiply
   190,240x = 449,900 × 449,900
4. Step 4: Simplify right side
   190,240x = 202,410,010,000
5. Step 5: Solve for x
   x = 202,410,010,000/190,240
6. Step 6: Final answer
   x = 1,063,971.88