Finding the Third Proportional to 853,136 and 1,285,111

Step by Step Solution

1. Step 1: Write the proportion equation
   853,136 : 1,285,111 = 1,285,111 : x
2. Step 2: Convert to fraction form
   853,136/1,285,111 = 1,285,111/x
3. Step 3: Cross multiply
   853,136x = 1,285,111 × 1,285,111
4. Step 4: Simplify right side
   853,136x = 1,651,510,282,321
5. Step 5: Solve for x
   x = 1,651,510,282,321/853,136
6. Step 6: Final answer
   x = 1,935,811.27