Finding the Third Proportional to 50,431.50 and 66,271.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,431.50 : 66,271.50 = 66,271.50 : x
2. Step 2: Convert to fraction form
   50,431.50/66,271.50 = 66,271.50/x
3. Step 3: Cross multiply
   50,431.50x = 66,271.50 × 66,271.50
4. Step 4: Simplify right side
   50,431.50x = 4,391,911,712.25
5. Step 5: Solve for x
   x = 4,391,911,712.25/50,431.50
6. Step 6: Final answer
   x = 87,086.68