Finding the Third Proportional to 111,604.50 and 168,413

Step by Step Solution

1. Step 1: Write the proportion equation
   111,604.50 : 168,413 = 168,413 : x
2. Step 2: Convert to fraction form
   111,604.50/168,413 = 168,413/x
3. Step 3: Cross multiply
   111,604.50x = 168,413 × 168,413
4. Step 4: Simplify right side
   111,604.50x = 28,362,938,569
5. Step 5: Solve for x
   x = 28,362,938,569/111,604.50
6. Step 6: Final answer
   x = 254,137.95