Finding the Third Proportional to 81,705.75 and 111,390.94

Step by Step Solution

1. Step 1: Write the proportion equation
   81,705.75 : 111,390.94 = 111,390.94 : x
2. Step 2: Convert to fraction form
   81,705.75/111,390.94 = 111,390.94/x
3. Step 3: Cross multiply
   81,705.75x = 111,390.94 × 111,390.94
4. Step 4: Simplify right side
   81,705.75x = 12,407,940,957.13
5. Step 5: Solve for x
   x = 12,407,940,957.13/81,705.75
6. Step 6: Final answer
   x = 151,861.29