Finding the Third Proportional to 57,087 and 123,985

Step by Step Solution

1. Step 1: Write the proportion equation
   57,087 : 123,985 = 123,985 : x
2. Step 2: Convert to fraction form
   57,087/123,985 = 123,985/x
3. Step 3: Cross multiply
   57,087x = 123,985 × 123,985
4. Step 4: Simplify right side
   57,087x = 15,372,280,225
5. Step 5: Solve for x
   x = 15,372,280,225/57,087
6. Step 6: Final answer
   x = 269,278.12