Finding the Third Proportional to 357,085.50 and 484,419

Step by Step Solution

1. Step 1: Write the proportion equation
   357,085.50 : 484,419 = 484,419 : x
2. Step 2: Convert to fraction form
   357,085.50/484,419 = 484,419/x
3. Step 3: Cross multiply
   357,085.50x = 484,419 × 484,419
4. Step 4: Simplify right side
   357,085.50x = 234,661,767,561
5. Step 5: Solve for x
   x = 234,661,767,561/357,085.50
6. Step 6: Final answer
   x = 657,158.49