Finding the Third Proportional to 72,659 and 112,279

Step by Step Solution

1. Step 1: Write the proportion equation
   72,659 : 112,279 = 112,279 : x
2. Step 2: Convert to fraction form
   72,659/112,279 = 112,279/x
3. Step 3: Cross multiply
   72,659x = 112,279 × 112,279
4. Step 4: Simplify right side
   72,659x = 12,606,573,841
5. Step 5: Solve for x
   x = 12,606,573,841/72,659
6. Step 6: Final answer
   x = 173,503.27