Finding the Third Proportional to 89,466 and 138,356

Step by Step Solution

1. Step 1: Write the proportion equation
   89,466 : 138,356 = 138,356 : x
2. Step 2: Convert to fraction form
   89,466/138,356 = 138,356/x
3. Step 3: Cross multiply
   89,466x = 138,356 × 138,356
4. Step 4: Simplify right side
   89,466x = 19,142,382,736
5. Step 5: Solve for x
   x = 19,142,382,736/89,466
6. Step 6: Final answer
   x = 213,962.65