Finding the Third Proportional to 590,756 and 916,510

Step by Step Solution

1. Step 1: Write the proportion equation
   590,756 : 916,510 = 916,510 : x
2. Step 2: Convert to fraction form
   590,756/916,510 = 916,510/x
3. Step 3: Cross multiply
   590,756x = 916,510 × 916,510
4. Step 4: Simplify right side
   590,756x = 839,990,580,100
5. Step 5: Solve for x
   x = 839,990,580,100/590,756
6. Step 6: Final answer
   x = 1,421,890.90