Finding the Third Proportional to 91,275 and 196,131

Step by Step Solution

1. Step 1: Write the proportion equation
   91,275 : 196,131 = 196,131 : x
2. Step 2: Convert to fraction form
   91,275/196,131 = 196,131/x
3. Step 3: Cross multiply
   91,275x = 196,131 × 196,131
4. Step 4: Simplify right side
   91,275x = 38,467,369,161
5. Step 5: Solve for x
   x = 38,467,369,161/91,275
6. Step 6: Final answer
   x = 421,444.75