Finding the Third Proportional to 357,091.50 and 484,428

Step by Step Solution

1. Step 1: Write the proportion equation
   357,091.50 : 484,428 = 484,428 : x
2. Step 2: Convert to fraction form
   357,091.50/484,428 = 484,428/x
3. Step 3: Cross multiply
   357,091.50x = 484,428 × 484,428
4. Step 4: Simplify right side
   357,091.50x = 234,670,487,184
5. Step 5: Solve for x
   x = 234,670,487,184/357,091.50
6. Step 6: Final answer
   x = 657,171.87