Finding the Third Proportional to 23,128 and 54,430

Step by Step Solution

1. Step 1: Write the proportion equation
   23,128 : 54,430 = 54,430 : x
2. Step 2: Convert to fraction form
   23,128/54,430 = 54,430/x
3. Step 3: Cross multiply
   23,128x = 54,430 × 54,430
4. Step 4: Simplify right side
   23,128x = 2,962,624,900
5. Step 5: Solve for x
   x = 2,962,624,900/23,128
6. Step 6: Final answer
   x = 128,096.89