Finding the Third Proportional to 1,189,431 and 1,915,161

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189,431 : 1,915,161 = 1,915,161 : x
2. Step 2: Convert to fraction form
   1,189,431/1,915,161 = 1,915,161/x
3. Step 3: Cross multiply
   1,189,431x = 1,915,161 × 1,915,161
4. Step 4: Simplify right side
   1,189,431x = 3,667,841,655,921
5. Step 5: Solve for x
   x = 3,667,841,655,921/1,189,431
6. Step 6: Final answer
   x = 3,083,694.35