Finding the Third Proportional to 66,930 and 89,230

Step by Step Solution

1. Step 1: Write the proportion equation
   66,930 : 89,230 = 89,230 : x
2. Step 2: Convert to fraction form
   66,930/89,230 = 89,230/x
3. Step 3: Cross multiply
   66,930x = 89,230 × 89,230
4. Step 4: Simplify right side
   66,930x = 7,961,992,900
5. Step 5: Solve for x
   x = 7,961,992,900/66,930
6. Step 6: Final answer
   x = 118,960.00