Finding the Third Proportional to 204,454 and 419,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   204,454 : 419,111.50 = 419,111.50 : x
2. Step 2: Convert to fraction form
   204,454/419,111.50 = 419,111.50/x
3. Step 3: Cross multiply
   204,454x = 419,111.50 × 419,111.50
4. Step 4: Simplify right side
   204,454x = 175,654,449,432.25
5. Step 5: Solve for x
   x = 175,654,449,432.25/204,454
6. Step 6: Final answer
   x = 859,139.22