Finding the Third Proportional to 50,985.75 and 71,671.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,985.75 : 71,671.50 = 71,671.50 : x
2. Step 2: Convert to fraction form
   50,985.75/71,671.50 = 71,671.50/x
3. Step 3: Cross multiply
   50,985.75x = 71,671.50 × 71,671.50
4. Step 4: Simplify right side
   50,985.75x = 5,136,803,912.25
5. Step 5: Solve for x
   x = 5,136,803,912.25/50,985.75
6. Step 6: Final answer
   x = 100,749.80