Finding the Third Proportional to 315,845.25 and 684,892

Step by Step Solution

1. Step 1: Write the proportion equation
   315,845.25 : 684,892 = 684,892 : x
2. Step 2: Convert to fraction form
   315,845.25/684,892 = 684,892/x
3. Step 3: Cross multiply
   315,845.25x = 684,892 × 684,892
4. Step 4: Simplify right side
   315,845.25x = 469,077,051,664
5. Step 5: Solve for x
   x = 469,077,051,664/315,845.25
6. Step 6: Final answer
   x = 1,485,148.35