Finding the Third Proportional to 1,205,136 and 1,599,378

Step by Step Solution

1. Step 1: Write the proportion equation
   1,205,136 : 1,599,378 = 1,599,378 : x
2. Step 2: Convert to fraction form
   1,205,136/1,599,378 = 1,599,378/x
3. Step 3: Cross multiply
   1,205,136x = 1,599,378 × 1,599,378
4. Step 4: Simplify right side
   1,205,136x = 2,558,009,986,884
5. Step 5: Solve for x
   x = 2,558,009,986,884/1,205,136
6. Step 6: Final answer
   x = 2,122,590.30