Finding the Third Proportional to 40,809 and 59,815.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,809 : 59,815.50 = 59,815.50 : x
2. Step 2: Convert to fraction form
   40,809/59,815.50 = 59,815.50/x
3. Step 3: Cross multiply
   40,809x = 59,815.50 × 59,815.50
4. Step 4: Simplify right side
   40,809x = 3,577,894,040.25
5. Step 5: Solve for x
   x = 3,577,894,040.25/40,809
6. Step 6: Final answer
   x = 87,674.14