Finding the Third Proportional to 637,451 and 1,390,813

Step by Step Solution

1. Step 1: Write the proportion equation
   637,451 : 1,390,813 = 1,390,813 : x
2. Step 2: Convert to fraction form
   637,451/1,390,813 = 1,390,813/x
3. Step 3: Cross multiply
   637,451x = 1,390,813 × 1,390,813
4. Step 4: Simplify right side
   637,451x = 1,934,360,800,969
5. Step 5: Solve for x
   x = 1,934,360,800,969/637,451
6. Step 6: Final answer
   x = 3,034,524.69