Finding the Third Proportional to 72,265 and 111,215

Step by Step Solution

1. Step 1: Write the proportion equation
   72,265 : 111,215 = 111,215 : x
2. Step 2: Convert to fraction form
   72,265/111,215 = 111,215/x
3. Step 3: Cross multiply
   72,265x = 111,215 × 111,215
4. Step 4: Simplify right side
   72,265x = 12,368,776,225
5. Step 5: Solve for x
   x = 12,368,776,225/72,265
6. Step 6: Final answer
   x = 171,158.60