Finding the Third Proportional to 153,391.50 and 331,284

Step by Step Solution

1. Step 1: Write the proportion equation
   153,391.50 : 331,284 = 331,284 : x
2. Step 2: Convert to fraction form
   153,391.50/331,284 = 331,284/x
3. Step 3: Cross multiply
   153,391.50x = 331,284 × 331,284
4. Step 4: Simplify right side
   153,391.50x = 109,749,088,656
5. Step 5: Solve for x
   x = 109,749,088,656/153,391.50
6. Step 6: Final answer
   x = 715,483.51