Finding the Third Proportional to 191,390 and 419,068

Step by Step Solution

1. Step 1: Write the proportion equation
   191,390 : 419,068 = 419,068 : x
2. Step 2: Convert to fraction form
   191,390/419,068 = 419,068/x
3. Step 3: Cross multiply
   191,390x = 419,068 × 419,068
4. Step 4: Simplify right side
   191,390x = 175,617,988,624
5. Step 5: Solve for x
   x = 175,617,988,624/191,390
6. Step 6: Final answer
   x = 917,592.29