Finding the Third Proportional to 78,916 and 111,001

Step by Step Solution

1. Step 1: Write the proportion equation
   78,916 : 111,001 = 111,001 : x
2. Step 2: Convert to fraction form
   78,916/111,001 = 111,001/x
3. Step 3: Cross multiply
   78,916x = 111,001 × 111,001
4. Step 4: Simplify right side
   78,916x = 12,321,222,001
5. Step 5: Solve for x
   x = 12,321,222,001/78,916
6. Step 6: Final answer
   x = 156,130.85