Finding the Third Proportional to 50,731.88 and 78,861.38

Step by Step Solution

1. Step 1: Write the proportion equation
   50,731.88 : 78,861.38 = 78,861.38 : x
2. Step 2: Convert to fraction form
   50,731.88/78,861.38 = 78,861.38/x
3. Step 3: Cross multiply
   50,731.88x = 78,861.38 × 78,861.38
4. Step 4: Simplify right side
   50,731.88x = 6,219,116,466.89
5. Step 5: Solve for x
   x = 6,219,116,466.89/50,731.88
6. Step 6: Final answer
   x = 122,587.95