Finding the Third Proportional to 1,189,389 and 1,915,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189,389 : 1,915,099.50 = 1,915,099.50 : x
2. Step 2: Convert to fraction form
   1,189,389/1,915,099.50 = 1,915,099.50/x
3. Step 3: Cross multiply
   1,189,389x = 1,915,099.50 × 1,915,099.50
4. Step 4: Simplify right side
   1,189,389x = 3,667,606,094,900.25
5. Step 5: Solve for x
   x = 3,667,606,094,900.25/1,189,389
6. Step 6: Final answer
   x = 3,083,605.19