Finding the Third Proportional to 57,081.75 and 123,213

Step by Step Solution

1. Step 1: Write the proportion equation
   57,081.75 : 123,213 = 123,213 : x
2. Step 2: Convert to fraction form
   57,081.75/123,213 = 123,213/x
3. Step 3: Cross multiply
   57,081.75x = 123,213 × 123,213
4. Step 4: Simplify right side
   57,081.75x = 15,181,443,369
5. Step 5: Solve for x
   x = 15,181,443,369/57,081.75
6. Step 6: Final answer
   x = 265,959.67