Finding the Third Proportional to 72,405.75 and 112,111.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,405.75 : 112,111.25 = 112,111.25 : x
2. Step 2: Convert to fraction form
   72,405.75/112,111.25 = 112,111.25/x
3. Step 3: Cross multiply
   72,405.75x = 112,111.25 × 112,111.25
4. Step 4: Simplify right side
   72,405.75x = 12,568,932,376.56
5. Step 5: Solve for x
   x = 12,568,932,376.56/72,405.75
6. Step 6: Final answer
   x = 173,590.25