Finding the Third Proportional to 360,298 and 782,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   360,298 : 782,131.50 = 782,131.50 : x
2. Step 2: Convert to fraction form
   360,298/782,131.50 = 782,131.50/x
3. Step 3: Cross multiply
   360,298x = 782,131.50 × 782,131.50
4. Step 4: Simplify right side
   360,298x = 611,729,683,292.25
5. Step 5: Solve for x
   x = 611,729,683,292.25/360,298
6. Step 6: Final answer
   x = 1,697,843.68