Finding the Third Proportional to 56,706 and 123,789

Step by Step Solution

1. Step 1: Write the proportion equation
   56,706 : 123,789 = 123,789 : x
2. Step 2: Convert to fraction form
   56,706/123,789 = 123,789/x
3. Step 3: Cross multiply
   56,706x = 123,789 × 123,789
4. Step 4: Simplify right side
   56,706x = 15,323,716,521
5. Step 5: Solve for x
   x = 15,323,716,521/56,706
6. Step 6: Final answer
   x = 270,230.95