Finding the Third Proportional to 99,156 and 203,144

Step by Step Solution

1. Step 1: Write the proportion equation
   99,156 : 203,144 = 203,144 : x
2. Step 2: Convert to fraction form
   99,156/203,144 = 203,144/x
3. Step 3: Cross multiply
   99,156x = 203,144 × 203,144
4. Step 4: Simplify right side
   99,156x = 41,267,484,736
5. Step 5: Solve for x
   x = 41,267,484,736/99,156
6. Step 6: Final answer
   x = 416,187.47