Finding the Third Proportional to 2,155,277.91 and 3,591,979.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,277.91 : 3,591,979.78 = 3,591,979.78 : x
2. Step 2: Convert to fraction form
   2,155,277.91/3,591,979.78 = 3,591,979.78/x
3. Step 3: Cross multiply
   2,155,277.91x = 3,591,979.78 × 3,591,979.78
4. Step 4: Simplify right side
   2,155,277.91x = 12,902,318,748,908.80
5. Step 5: Solve for x
   x = 12,902,318,748,908.80/2,155,277.91
6. Step 6: Final answer
   x = 5,986,382.88