Finding the Third Proportional to 50,700 and 78,696

Step by Step Solution

1. Step 1: Write the proportion equation
   50,700 : 78,696 = 78,696 : x
2. Step 2: Convert to fraction form
   50,700/78,696 = 78,696/x
3. Step 3: Cross multiply
   50,700x = 78,696 × 78,696
4. Step 4: Simplify right side
   50,700x = 6,193,060,416
5. Step 5: Solve for x
   x = 6,193,060,416/50,700
6. Step 6: Final answer
   x = 122,151.09