Finding the Third Proportional to 89,111 and 129,653

Step by Step Solution

1. Step 1: Write the proportion equation
   89,111 : 129,653 = 129,653 : x
2. Step 2: Convert to fraction form
   89,111/129,653 = 129,653/x
3. Step 3: Cross multiply
   89,111x = 129,653 × 129,653
4. Step 4: Simplify right side
   89,111x = 16,809,900,409
5. Step 5: Solve for x
   x = 16,809,900,409/89,111
6. Step 6: Final answer
   x = 188,640.02