Finding the Third Proportional to 72,578 and 112,102

Step by Step Solution

1. Step 1: Write the proportion equation
   72,578 : 112,102 = 112,102 : x
2. Step 2: Convert to fraction form
   72,578/112,102 = 112,102/x
3. Step 3: Cross multiply
   72,578x = 112,102 × 112,102
4. Step 4: Simplify right side
   72,578x = 12,566,858,404
5. Step 5: Solve for x
   x = 12,566,858,404/72,578
6. Step 6: Final answer
   x = 173,149.69