Finding the Third Proportional to 287,458.50 and 604,706.25

Step by Step Solution

1. Step 1: Write the proportion equation
   287,458.50 : 604,706.25 = 604,706.25 : x
2. Step 2: Convert to fraction form
   287,458.50/604,706.25 = 604,706.25/x
3. Step 3: Cross multiply
   287,458.50x = 604,706.25 × 604,706.25
4. Step 4: Simplify right side
   287,458.50x = 365,669,648,789.06
5. Step 5: Solve for x
   x = 365,669,648,789.06/287,458.50
6. Step 6: Final answer
   x = 1,272,078.05