Finding the Third Proportional to 111,908.50 and 241,690

Step by Step Solution

1. Step 1: Write the proportion equation
   111,908.50 : 241,690 = 241,690 : x
2. Step 2: Convert to fraction form
   111,908.50/241,690 = 241,690/x
3. Step 3: Cross multiply
   111,908.50x = 241,690 × 241,690
4. Step 4: Simplify right side
   111,908.50x = 58,414,056,100
5. Step 5: Solve for x
   x = 58,414,056,100/111,908.50
6. Step 6: Final answer
   x = 521,980.51