Finding the Third Proportional to 815,426 and 1,199,172

Step by Step Solution

1. Step 1: Write the proportion equation
   815,426 : 1,199,172 = 1,199,172 : x
2. Step 2: Convert to fraction form
   815,426/1,199,172 = 1,199,172/x
3. Step 3: Cross multiply
   815,426x = 1,199,172 × 1,199,172
4. Step 4: Simplify right side
   815,426x = 1,438,013,485,584
5. Step 5: Solve for x
   x = 1,438,013,485,584/815,426
6. Step 6: Final answer
   x = 1,763,511.94