Finding the Third Proportional to 72,674 and 111,121

Step by Step Solution

1. Step 1: Write the proportion equation
   72,674 : 111,121 = 111,121 : x
2. Step 2: Convert to fraction form
   72,674/111,121 = 111,121/x
3. Step 3: Cross multiply
   72,674x = 111,121 × 111,121
4. Step 4: Simplify right side
   72,674x = 12,347,876,641
5. Step 5: Solve for x
   x = 12,347,876,641/72,674
6. Step 6: Final answer
   x = 169,907.76