Finding the Third Proportional to 15,426.75 and 20,905.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,426.75 : 20,905.50 = 20,905.50 : x
2. Step 2: Convert to fraction form
   15,426.75/20,905.50 = 20,905.50/x
3. Step 3: Cross multiply
   15,426.75x = 20,905.50 × 20,905.50
4. Step 4: Simplify right side
   15,426.75x = 437,039,930.25
5. Step 5: Solve for x
   x = 437,039,930.25/15,426.75
6. Step 6: Final answer
   x = 28,330.01