Finding the Third Proportional to 31,345.50 and 65,281.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,345.50 : 65,281.50 = 65,281.50 : x
2. Step 2: Convert to fraction form
   31,345.50/65,281.50 = 65,281.50/x
3. Step 3: Cross multiply
   31,345.50x = 65,281.50 × 65,281.50
4. Step 4: Simplify right side
   31,345.50x = 4,261,674,242.25
5. Step 5: Solve for x
   x = 4,261,674,242.25/31,345.50
6. Step 6: Final answer
   x = 135,958.09