Finding the Third Proportional to 411,188 and 599,280

Step by Step Solution

1. Step 1: Write the proportion equation
   411,188 : 599,280 = 599,280 : x
2. Step 2: Convert to fraction form
   411,188/599,280 = 599,280/x
3. Step 3: Cross multiply
   411,188x = 599,280 × 599,280
4. Step 4: Simplify right side
   411,188x = 359,136,518,400
5. Step 5: Solve for x
   x = 359,136,518,400/411,188
6. Step 6: Final answer
   x = 873,411.96