Finding the Third Proportional to 50,429 and 78,081

Step by Step Solution

1. Step 1: Write the proportion equation
   50,429 : 78,081 = 78,081 : x
2. Step 2: Convert to fraction form
   50,429/78,081 = 78,081/x
3. Step 3: Cross multiply
   50,429x = 78,081 × 78,081
4. Step 4: Simplify right side
   50,429x = 6,096,642,561
5. Step 5: Solve for x
   x = 6,096,642,561/50,429
6. Step 6: Final answer
   x = 120,895.57