Finding the Third Proportional to 122,940 and 189,870

Step by Step Solution

1. Step 1: Write the proportion equation
   122,940 : 189,870 = 189,870 : x
2. Step 2: Convert to fraction form
   122,940/189,870 = 189,870/x
3. Step 3: Cross multiply
   122,940x = 189,870 × 189,870
4. Step 4: Simplify right side
   122,940x = 36,050,616,900
5. Step 5: Solve for x
   x = 36,050,616,900/122,940
6. Step 6: Final answer
   x = 293,237.49