Finding the Third Proportional to 78,940 and 120,030

Step by Step Solution

1. Step 1: Write the proportion equation
   78,940 : 120,030 = 120,030 : x
2. Step 2: Convert to fraction form
   78,940/120,030 = 120,030/x
3. Step 3: Cross multiply
   78,940x = 120,030 × 120,030
4. Step 4: Simplify right side
   78,940x = 14,407,200,900
5. Step 5: Solve for x
   x = 14,407,200,900/78,940
6. Step 6: Final answer
   x = 182,508.25