Finding the Third Proportional to 191,812 and 290,384

Step by Step Solution

1. Step 1: Write the proportion equation
   191,812 : 290,384 = 290,384 : x
2. Step 2: Convert to fraction form
   191,812/290,384 = 290,384/x
3. Step 3: Cross multiply
   191,812x = 290,384 × 290,384
4. Step 4: Simplify right side
   191,812x = 84,322,867,456
5. Step 5: Solve for x
   x = 84,322,867,456/191,812
6. Step 6: Final answer
   x = 439,612.05