Finding the Third Proportional to 90,889.50 and 190,131

Step by Step Solution

1. Step 1: Write the proportion equation
   90,889.50 : 190,131 = 190,131 : x
2. Step 2: Convert to fraction form
   90,889.50/190,131 = 190,131/x
3. Step 3: Cross multiply
   90,889.50x = 190,131 × 190,131
4. Step 4: Simplify right side
   90,889.50x = 36,149,797,161
5. Step 5: Solve for x
   x = 36,149,797,161/90,889.50
6. Step 6: Final answer
   x = 397,733.48