Finding the Third Proportional to 287,443 and 604,653.50

Step by Step Solution

1. Step 1: Write the proportion equation
   287,443 : 604,653.50 = 604,653.50 : x
2. Step 2: Convert to fraction form
   287,443/604,653.50 = 604,653.50/x
3. Step 3: Cross multiply
   287,443x = 604,653.50 × 604,653.50
4. Step 4: Simplify right side
   287,443x = 365,605,855,062.25
5. Step 5: Solve for x
   x = 365,605,855,062.25/287,443
6. Step 6: Final answer
   x = 1,271,924.71