Finding the Third Proportional to 198,660 and 435,111

Step by Step Solution

1. Step 1: Write the proportion equation
   198,660 : 435,111 = 435,111 : x
2. Step 2: Convert to fraction form
   198,660/435,111 = 435,111/x
3. Step 3: Cross multiply
   198,660x = 435,111 × 435,111
4. Step 4: Simplify right side
   198,660x = 189,321,582,321
5. Step 5: Solve for x
   x = 189,321,582,321/198,660
6. Step 6: Final answer
   x = 952,992.96