Finding the Third Proportional to 296,778 and 699,878.50

Step by Step Solution

1. Step 1: Write the proportion equation
   296,778 : 699,878.50 = 699,878.50 : x
2. Step 2: Convert to fraction form
   296,778/699,878.50 = 699,878.50/x
3. Step 3: Cross multiply
   296,778x = 699,878.50 × 699,878.50
4. Step 4: Simplify right side
   296,778x = 489,829,914,762.25
5. Step 5: Solve for x
   x = 489,829,914,762.25/296,778
6. Step 6: Final answer
   x = 1,650,492.67