Finding the Third Proportional to 20,639.50 and 34,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,639.50 : 34,147.50 = 34,147.50 : x
2. Step 2: Convert to fraction form
   20,639.50/34,147.50 = 34,147.50/x
3. Step 3: Cross multiply
   20,639.50x = 34,147.50 × 34,147.50
4. Step 4: Simplify right side
   20,639.50x = 1,166,051,756.25
5. Step 5: Solve for x
   x = 1,166,051,756.25/20,639.50
6. Step 6: Final answer
   x = 56,496.12