Finding the Third Proportional to 298,773 and 699,911.50

Step by Step Solution

1. Step 1: Write the proportion equation
   298,773 : 699,911.50 = 699,911.50 : x
2. Step 2: Convert to fraction form
   298,773/699,911.50 = 699,911.50/x
3. Step 3: Cross multiply
   298,773x = 699,911.50 × 699,911.50
4. Step 4: Simplify right side
   298,773x = 489,876,107,832.25
5. Step 5: Solve for x
   x = 489,876,107,832.25/298,773
6. Step 6: Final answer
   x = 1,639,626.43