Finding the Third Proportional to 641,448 and 1,015,642

Step by Step Solution

1. Step 1: Write the proportion equation
   641,448 : 1,015,642 = 1,015,642 : x
2. Step 2: Convert to fraction form
   641,448/1,015,642 = 1,015,642/x
3. Step 3: Cross multiply
   641,448x = 1,015,642 × 1,015,642
4. Step 4: Simplify right side
   641,448x = 1,031,528,672,164
5. Step 5: Solve for x
   x = 1,031,528,672,164/641,448
6. Step 6: Final answer
   x = 1,608,125.17