Finding the Third Proportional to 43,412 and 89,128

Step by Step Solution

1. Step 1: Write the proportion equation
   43,412 : 89,128 = 89,128 : x
2. Step 2: Convert to fraction form
   43,412/89,128 = 89,128/x
3. Step 3: Cross multiply
   43,412x = 89,128 × 89,128
4. Step 4: Simplify right side
   43,412x = 7,943,800,384
5. Step 5: Solve for x
   x = 7,943,800,384/43,412
6. Step 6: Final answer
   x = 182,986.28