Finding the Third Proportional to 20,900 and 34,308.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,900 : 34,308.50 = 34,308.50 : x
2. Step 2: Convert to fraction form
   20,900/34,308.50 = 34,308.50/x
3. Step 3: Cross multiply
   20,900x = 34,308.50 × 34,308.50
4. Step 4: Simplify right side
   20,900x = 1,177,073,172.25
5. Step 5: Solve for x
   x = 1,177,073,172.25/20,900
6. Step 6: Final answer
   x = 56,319.29