Finding the Third Proportional to 50,776.56 and 78,583.92

Step by Step Solution

1. Step 1: Write the proportion equation
   50,776.56 : 78,583.92 = 78,583.92 : x
2. Step 2: Convert to fraction form
   50,776.56/78,583.92 = 78,583.92/x
3. Step 3: Cross multiply
   50,776.56x = 78,583.92 × 78,583.92
4. Step 4: Simplify right side
   50,776.56x = 6,175,432,777.26
5. Step 5: Solve for x
   x = 6,175,432,777.26/50,776.56
6. Step 6: Final answer
   x = 121,619.76