Finding the Third Proportional to 242,856 and 515,308.50

Step by Step Solution

1. Step 1: Write the proportion equation
   242,856 : 515,308.50 = 515,308.50 : x
2. Step 2: Convert to fraction form
   242,856/515,308.50 = 515,308.50/x
3. Step 3: Cross multiply
   242,856x = 515,308.50 × 515,308.50
4. Step 4: Simplify right side
   242,856x = 265,542,850,172.25
5. Step 5: Solve for x
   x = 265,542,850,172.25/242,856
6. Step 6: Final answer
   x = 1,093,416.88