Finding the Third Proportional to 152,969.50 and 331,358

Step by Step Solution

1. Step 1: Write the proportion equation
   152,969.50 : 331,358 = 331,358 : x
2. Step 2: Convert to fraction form
   152,969.50/331,358 = 331,358/x
3. Step 3: Cross multiply
   152,969.50x = 331,358 × 331,358
4. Step 4: Simplify right side
   152,969.50x = 109,798,124,164
5. Step 5: Solve for x
   x = 109,798,124,164/152,969.50
6. Step 6: Final answer
   x = 717,777.88