Finding the Third Proportional to 515,515.50 and 774,243

Step by Step Solution

1. Step 1: Write the proportion equation
   515,515.50 : 774,243 = 774,243 : x
2. Step 2: Convert to fraction form
   515,515.50/774,243 = 774,243/x
3. Step 3: Cross multiply
   515,515.50x = 774,243 × 774,243
4. Step 4: Simplify right side
   515,515.50x = 599,452,223,049
5. Step 5: Solve for x
   x = 599,452,223,049/515,515.50
6. Step 6: Final answer
   x = 1,162,820.95