Finding the Third Proportional to 690,412 and 932,790

Step by Step Solution

1. Step 1: Write the proportion equation
   690,412 : 932,790 = 932,790 : x
2. Step 2: Convert to fraction form
   690,412/932,790 = 932,790/x
3. Step 3: Cross multiply
   690,412x = 932,790 × 932,790
4. Step 4: Simplify right side
   690,412x = 870,097,184,100
5. Step 5: Solve for x
   x = 870,097,184,100/690,412
6. Step 6: Final answer
   x = 1,260,257.91