Finding the Third Proportional to 112,261.50 and 168,390

Step by Step Solution

1. Step 1: Write the proportion equation
   112,261.50 : 168,390 = 168,390 : x
2. Step 2: Convert to fraction form
   112,261.50/168,390 = 168,390/x
3. Step 3: Cross multiply
   112,261.50x = 168,390 × 168,390
4. Step 4: Simplify right side
   112,261.50x = 28,355,192,100
5. Step 5: Solve for x
   x = 28,355,192,100/112,261.50
6. Step 6: Final answer
   x = 252,581.63