Finding the Third Proportional to 72,317 and 111,229

Step by Step Solution

1. Step 1: Write the proportion equation
   72,317 : 111,229 = 111,229 : x
2. Step 2: Convert to fraction form
   72,317/111,229 = 111,229/x
3. Step 3: Cross multiply
   72,317x = 111,229 × 111,229
4. Step 4: Simplify right side
   72,317x = 12,371,890,441
5. Step 5: Solve for x
   x = 12,371,890,441/72,317
6. Step 6: Final answer
   x = 171,078.59