Finding the Third Proportional to 79,712 and 111,712

Step by Step Solution

1. Step 1: Write the proportion equation
   79,712 : 111,712 = 111,712 : x
2. Step 2: Convert to fraction form
   79,712/111,712 = 111,712/x
3. Step 3: Cross multiply
   79,712x = 111,712 × 111,712
4. Step 4: Simplify right side
   79,712x = 12,479,570,944
5. Step 5: Solve for x
   x = 12,479,570,944/79,712
6. Step 6: Final answer
   x = 156,558.25