Finding the Third Proportional to 641,412 and 1,403,112

Step by Step Solution

1. Step 1: Write the proportion equation
   641,412 : 1,403,112 = 1,403,112 : x
2. Step 2: Convert to fraction form
   641,412/1,403,112 = 1,403,112/x
3. Step 3: Cross multiply
   641,412x = 1,403,112 × 1,403,112
4. Step 4: Simplify right side
   641,412x = 1,968,723,284,544
5. Step 5: Solve for x
   x = 1,968,723,284,544/641,412
6. Step 6: Final answer
   x = 3,069,358.36