Finding the Third Proportional to 287,784 and 610,636.50

Step by Step Solution

1. Step 1: Write the proportion equation
   287,784 : 610,636.50 = 610,636.50 : x
2. Step 2: Convert to fraction form
   287,784/610,636.50 = 610,636.50/x
3. Step 3: Cross multiply
   287,784x = 610,636.50 × 610,636.50
4. Step 4: Simplify right side
   287,784x = 372,876,935,132.25
5. Step 5: Solve for x
   x = 372,876,935,132.25/287,784
6. Step 6: Final answer
   x = 1,295,683.34