Finding the Third Proportional to 57,291.75 and 123,359.63

Step by Step Solution

1. Step 1: Write the proportion equation
   57,291.75 : 123,359.63 = 123,359.63 : x
2. Step 2: Convert to fraction form
   57,291.75/123,359.63 = 123,359.63/x
3. Step 3: Cross multiply
   57,291.75x = 123,359.63 × 123,359.63
4. Step 4: Simplify right side
   57,291.75x = 15,217,597,080.14
5. Step 5: Solve for x
   x = 15,217,597,080.14/57,291.75
6. Step 6: Final answer
   x = 265,615.85