Finding the Third Proportional to 91,910 and 191,596

Step by Step Solution

1. Step 1: Write the proportion equation
   91,910 : 191,596 = 191,596 : x
2. Step 2: Convert to fraction form
   91,910/191,596 = 191,596/x
3. Step 3: Cross multiply
   91,910x = 191,596 × 191,596
4. Step 4: Simplify right side
   91,910x = 36,709,027,216
5. Step 5: Solve for x
   x = 36,709,027,216/91,910
6. Step 6: Final answer
   x = 399,401.88