Finding the Third Proportional to 55,430 and 114,128

Step by Step Solution

1. Step 1: Write the proportion equation
   55,430 : 114,128 = 114,128 : x
2. Step 2: Convert to fraction form
   55,430/114,128 = 114,128/x
3. Step 3: Cross multiply
   55,430x = 114,128 × 114,128
4. Step 4: Simplify right side
   55,430x = 13,025,200,384
5. Step 5: Solve for x
   x = 13,025,200,384/55,430
6. Step 6: Final answer
   x = 234,984.67