Finding the Third Proportional to 120,717.50 and 191,108

Step by Step Solution

1. Step 1: Write the proportion equation
   120,717.50 : 191,108 = 191,108 : x
2. Step 2: Convert to fraction form
   120,717.50/191,108 = 191,108/x
3. Step 3: Cross multiply
   120,717.50x = 191,108 × 191,108
4. Step 4: Simplify right side
   120,717.50x = 36,522,267,664
5. Step 5: Solve for x
   x = 36,522,267,664/120,717.50
6. Step 6: Final answer
   x = 302,543.27