Finding the Third Proportional to 373,552 and 503,280

Step by Step Solution

1. Step 1: Write the proportion equation
   373,552 : 503,280 = 503,280 : x
2. Step 2: Convert to fraction form
   373,552/503,280 = 503,280/x
3. Step 3: Cross multiply
   373,552x = 503,280 × 503,280
4. Step 4: Simplify right side
   373,552x = 253,290,758,400
5. Step 5: Solve for x
   x = 253,290,758,400/373,552
6. Step 6: Final answer
   x = 678,060.24