Finding the Third Proportional to 225,679.50 and 349,866

Step by Step Solution

1. Step 1: Write the proportion equation
   225,679.50 : 349,866 = 349,866 : x
2. Step 2: Convert to fraction form
   225,679.50/349,866 = 349,866/x
3. Step 3: Cross multiply
   225,679.50x = 349,866 × 349,866
4. Step 4: Simplify right side
   225,679.50x = 122,406,217,956
5. Step 5: Solve for x
   x = 122,406,217,956/225,679.50
6. Step 6: Final answer
   x = 542,389.62