Finding the Third Proportional to 30,811.50 and 63,958.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,811.50 : 63,958.50 = 63,958.50 : x
2. Step 2: Convert to fraction form
   30,811.50/63,958.50 = 63,958.50/x
3. Step 3: Cross multiply
   30,811.50x = 63,958.50 × 63,958.50
4. Step 4: Simplify right side
   30,811.50x = 4,090,689,722.25
5. Step 5: Solve for x
   x = 4,090,689,722.25/30,811.50
6. Step 6: Final answer
   x = 132,765.03