Finding the Third Proportional to 815,136 and 1,787,740

Step by Step Solution

1. Step 1: Write the proportion equation
   815,136 : 1,787,740 = 1,787,740 : x
2. Step 2: Convert to fraction form
   815,136/1,787,740 = 1,787,740/x
3. Step 3: Cross multiply
   815,136x = 1,787,740 × 1,787,740
4. Step 4: Simplify right side
   815,136x = 3,196,014,307,600
5. Step 5: Solve for x
   x = 3,196,014,307,600/815,136
6. Step 6: Final answer
   x = 3,920,835.67