Finding the Third Proportional to 690,408 and 932,784

Step by Step Solution

1. Step 1: Write the proportion equation
   690,408 : 932,784 = 932,784 : x
2. Step 2: Convert to fraction form
   690,408/932,784 = 932,784/x
3. Step 3: Cross multiply
   690,408x = 932,784 × 932,784
4. Step 4: Simplify right side
   690,408x = 870,085,990,656
5. Step 5: Solve for x
   x = 870,085,990,656/690,408
6. Step 6: Final answer
   x = 1,260,249.00