Finding the Third Proportional to 315,216.56 and 684,014.63

Step by Step Solution

1. Step 1: Write the proportion equation
   315,216.56 : 684,014.63 = 684,014.63 : x
2. Step 2: Convert to fraction form
   315,216.56/684,014.63 = 684,014.63/x
3. Step 3: Cross multiply
   315,216.56x = 684,014.63 × 684,014.63
4. Step 4: Simplify right side
   315,216.56x = 467,876,007,213.89
5. Step 5: Solve for x
   x = 467,876,007,213.89/315,216.56
6. Step 6: Final answer
   x = 1,484,300.20