Finding the Third Proportional to 242,356.50 and 517,699.50

Step by Step Solution

1. Step 1: Write the proportion equation
   242,356.50 : 517,699.50 = 517,699.50 : x
2. Step 2: Convert to fraction form
   242,356.50/517,699.50 = 517,699.50/x
3. Step 3: Cross multiply
   242,356.50x = 517,699.50 × 517,699.50
4. Step 4: Simplify right side
   242,356.50x = 268,012,772,300.25
5. Step 5: Solve for x
   x = 268,012,772,300.25/242,356.50
6. Step 6: Final answer
   x = 1,105,861.70