Finding the Third Proportional to 151,186.50 and 328,131

Step by Step Solution

1. Step 1: Write the proportion equation
   151,186.50 : 328,131 = 328,131 : x
2. Step 2: Convert to fraction form
   151,186.50/328,131 = 328,131/x
3. Step 3: Cross multiply
   151,186.50x = 328,131 × 328,131
4. Step 4: Simplify right side
   151,186.50x = 107,669,953,161
5. Step 5: Solve for x
   x = 107,669,953,161/151,186.50
6. Step 6: Final answer
   x = 712,166.45