Finding the Third Proportional to 196,116 and 428,197

Step by Step Solution

1. Step 1: Write the proportion equation
   196,116 : 428,197 = 428,197 : x
2. Step 2: Convert to fraction form
   196,116/428,197 = 428,197/x
3. Step 3: Cross multiply
   196,116x = 428,197 × 428,197
4. Step 4: Simplify right side
   196,116x = 183,352,670,809
5. Step 5: Solve for x
   x = 183,352,670,809/196,116
6. Step 6: Final answer
   x = 934,919.49