Finding the Third Proportional to 191,898 and 419,988

Step by Step Solution

1. Step 1: Write the proportion equation
   191,898 : 419,988 = 419,988 : x
2. Step 2: Convert to fraction form
   191,898/419,988 = 419,988/x
3. Step 3: Cross multiply
   191,898x = 419,988 × 419,988
4. Step 4: Simplify right side
   191,898x = 176,389,920,144
5. Step 5: Solve for x
   x = 176,389,920,144/191,898
6. Step 6: Final answer
   x = 919,185.82