Finding the Third Proportional to 294,016.50 and 644,071.50

Step by Step Solution

1. Step 1: Write the proportion equation
   294,016.50 : 644,071.50 = 644,071.50 : x
2. Step 2: Convert to fraction form
   294,016.50/644,071.50 = 644,071.50/x
3. Step 3: Cross multiply
   294,016.50x = 644,071.50 × 644,071.50
4. Step 4: Simplify right side
   294,016.50x = 414,828,097,112.25
5. Step 5: Solve for x
   x = 414,828,097,112.25/294,016.50
6. Step 6: Final answer
   x = 1,410,900.74