Finding the Third Proportional to 287,370 and 624,481.50

Step by Step Solution

1. Step 1: Write the proportion equation
   287,370 : 624,481.50 = 624,481.50 : x
2. Step 2: Convert to fraction form
   287,370/624,481.50 = 624,481.50/x
3. Step 3: Cross multiply
   287,370x = 624,481.50 × 624,481.50
4. Step 4: Simplify right side
   287,370x = 389,977,143,842.25
5. Step 5: Solve for x
   x = 389,977,143,842.25/287,370
6. Step 6: Final answer
   x = 1,357,055.86