Finding the Third Proportional to 1,189,403 and 1,915,120

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189,403 : 1,915,120 = 1,915,120 : x
2. Step 2: Convert to fraction form
   1,189,403/1,915,120 = 1,915,120/x
3. Step 3: Cross multiply
   1,189,403x = 1,915,120 × 1,915,120
4. Step 4: Simplify right side
   1,189,403x = 3,667,684,614,400
5. Step 5: Solve for x
   x = 3,667,684,614,400/1,189,403
6. Step 6: Final answer
   x = 3,083,634.91