Finding the Third Proportional to 153,016.50 and 331,443

Step by Step Solution

1. Step 1: Write the proportion equation
   153,016.50 : 331,443 = 331,443 : x
2. Step 2: Convert to fraction form
   153,016.50/331,443 = 331,443/x
3. Step 3: Cross multiply
   153,016.50x = 331,443 × 331,443
4. Step 4: Simplify right side
   153,016.50x = 109,854,462,249
5. Step 5: Solve for x
   x = 109,854,462,249/153,016.50
6. Step 6: Final answer
   x = 717,925.60