Finding the Third Proportional to 119,820 and 131,340

Step by Step Solution

1. Step 1: Write the proportion equation
   119,820 : 131,340 = 131,340 : x
2. Step 2: Convert to fraction form
   119,820/131,340 = 131,340/x
3. Step 3: Cross multiply
   119,820x = 131,340 × 131,340
4. Step 4: Simplify right side
   119,820x = 17,250,195,600
5. Step 5: Solve for x
   x = 17,250,195,600/119,820
6. Step 6: Final answer
   x = 143,967.58