Finding the Third Proportional to 157,171.50 and 321,606

Step by Step Solution

1. Step 1: Write the proportion equation
   157,171.50 : 321,606 = 321,606 : x
2. Step 2: Convert to fraction form
   157,171.50/321,606 = 321,606/x
3. Step 3: Cross multiply
   157,171.50x = 321,606 × 321,606
4. Step 4: Simplify right side
   157,171.50x = 103,430,419,236
5. Step 5: Solve for x
   x = 103,430,419,236/157,171.50
6. Step 6: Final answer
   x = 658,073.63