Finding the Third Proportional to 111,612 and 234,123

Step by Step Solution

1. Step 1: Write the proportion equation
   111,612 : 234,123 = 234,123 : x
2. Step 2: Convert to fraction form
   111,612/234,123 = 234,123/x
3. Step 3: Cross multiply
   111,612x = 234,123 × 234,123
4. Step 4: Simplify right side
   111,612x = 54,813,579,129
5. Step 5: Solve for x
   x = 54,813,579,129/111,612
6. Step 6: Final answer
   x = 491,108.30