Finding the Third Proportional to 50,426 and 66,890.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,426 : 66,890.50 = 66,890.50 : x
2. Step 2: Convert to fraction form
   50,426/66,890.50 = 66,890.50/x
3. Step 3: Cross multiply
   50,426x = 66,890.50 × 66,890.50
4. Step 4: Simplify right side
   50,426x = 4,474,338,990.25
5. Step 5: Solve for x
   x = 4,474,338,990.25/50,426
6. Step 6: Final answer
   x = 88,730.79