Finding the Third Proportional to 76,990 and 112,818

Step by Step Solution

1. Step 1: Write the proportion equation
   76,990 : 112,818 = 112,818 : x
2. Step 2: Convert to fraction form
   76,990/112,818 = 112,818/x
3. Step 3: Cross multiply
   76,990x = 112,818 × 112,818
4. Step 4: Simplify right side
   76,990x = 12,727,901,124
5. Step 5: Solve for x
   x = 12,727,901,124/76,990
6. Step 6: Final answer
   x = 165,318.89