Finding the Third Proportional to 1,239,726 and 1,915,692

Step by Step Solution

1. Step 1: Write the proportion equation
   1,239,726 : 1,915,692 = 1,915,692 : x
2. Step 2: Convert to fraction form
   1,239,726/1,915,692 = 1,915,692/x
3. Step 3: Cross multiply
   1,239,726x = 1,915,692 × 1,915,692
4. Step 4: Simplify right side
   1,239,726x = 3,669,875,838,864
5. Step 5: Solve for x
   x = 3,669,875,838,864/1,239,726
6. Step 6: Final answer
   x = 2,960,231.41