Finding the Third Proportional to 81,705 and 112,512

Step by Step Solution

1. Step 1: Write the proportion equation
   81,705 : 112,512 = 112,512 : x
2. Step 2: Convert to fraction form
   81,705/112,512 = 112,512/x
3. Step 3: Cross multiply
   81,705x = 112,512 × 112,512
4. Step 4: Simplify right side
   81,705x = 12,658,950,144
5. Step 5: Solve for x
   x = 12,658,950,144/81,705
6. Step 6: Final answer
   x = 154,934.83