Finding the Third Proportional to 690,425 and 932,809.50

Step by Step Solution

1. Step 1: Write the proportion equation
   690,425 : 932,809.50 = 932,809.50 : x
2. Step 2: Convert to fraction form
   690,425/932,809.50 = 932,809.50/x
3. Step 3: Cross multiply
   690,425x = 932,809.50 × 932,809.50
4. Step 4: Simplify right side
   690,425x = 870,133,563,290.25
5. Step 5: Solve for x
   x = 870,133,563,290.25/690,425
6. Step 6: Final answer
   x = 1,260,286.87