Finding the Third Proportional to 56,918.95 and 123,679.41

Step by Step Solution

1. Step 1: Write the proportion equation
   56,918.95 : 123,679.41 = 123,679.41 : x
2. Step 2: Convert to fraction form
   56,918.95/123,679.41 = 123,679.41/x
3. Step 3: Cross multiply
   56,918.95x = 123,679.41 × 123,679.41
4. Step 4: Simplify right side
   56,918.95x = 15,296,595,530.35
5. Step 5: Solve for x
   x = 15,296,595,530.35/56,918.95
6. Step 6: Final answer
   x = 268,743.44