Finding the Third Proportional to 90,074 and 191,812

Step by Step Solution

1. Step 1: Write the proportion equation
   90,074 : 191,812 = 191,812 : x
2. Step 2: Convert to fraction form
   90,074/191,812 = 191,812/x
3. Step 3: Cross multiply
   90,074x = 191,812 × 191,812
4. Step 4: Simplify right side
   90,074x = 36,791,843,344
5. Step 5: Solve for x
   x = 36,791,843,344/90,074
6. Step 6: Final answer
   x = 408,462.41