Finding the Third Proportional to 153,018.50 and 331,447

Step by Step Solution

1. Step 1: Write the proportion equation
   153,018.50 : 331,447 = 331,447 : x
2. Step 2: Convert to fraction form
   153,018.50/331,447 = 331,447/x
3. Step 3: Cross multiply
   153,018.50x = 331,447 × 331,447
4. Step 4: Simplify right side
   153,018.50x = 109,857,113,809
5. Step 5: Solve for x
   x = 109,857,113,809/153,018.50
6. Step 6: Final answer
   x = 717,933.54