Finding the Third Proportional to 366,714 and 490,603.50

Step by Step Solution

1. Step 1: Write the proportion equation
   366,714 : 490,603.50 = 490,603.50 : x
2. Step 2: Convert to fraction form
   366,714/490,603.50 = 490,603.50/x
3. Step 3: Cross multiply
   366,714x = 490,603.50 × 490,603.50
4. Step 4: Simplify right side
   366,714x = 240,691,794,212.25
5. Step 5: Solve for x
   x = 240,691,794,212.25/366,714
6. Step 6: Final answer
   x = 656,347.44