Finding the Third Proportional to 242,137.50 and 478,077

Step by Step Solution

1. Step 1: Write the proportion equation
   242,137.50 : 478,077 = 478,077 : x
2. Step 2: Convert to fraction form
   242,137.50/478,077 = 478,077/x
3. Step 3: Cross multiply
   242,137.50x = 478,077 × 478,077
4. Step 4: Simplify right side
   242,137.50x = 228,557,617,929
5. Step 5: Solve for x
   x = 228,557,617,929/242,137.50
6. Step 6: Final answer
   x = 943,916.65