Finding the Third Proportional to 76,260 and 114,990

Step by Step Solution

1. Step 1: Write the proportion equation
   76,260 : 114,990 = 114,990 : x
2. Step 2: Convert to fraction form
   76,260/114,990 = 114,990/x
3. Step 3: Cross multiply
   76,260x = 114,990 × 114,990
4. Step 4: Simplify right side
   76,260x = 13,222,700,100
5. Step 5: Solve for x
   x = 13,222,700,100/76,260
6. Step 6: Final answer
   x = 173,389.72