Finding the Third Proportional to 50,517 and 78,435

Step by Step Solution

1. Step 1: Write the proportion equation
   50,517 : 78,435 = 78,435 : x
2. Step 2: Convert to fraction form
   50,517/78,435 = 78,435/x
3. Step 3: Cross multiply
   50,517x = 78,435 × 78,435
4. Step 4: Simplify right side
   50,517x = 6,152,049,225
5. Step 5: Solve for x
   x = 6,152,049,225/50,517
6. Step 6: Final answer
   x = 121,781.76