Finding the Third Proportional to 2,431,345.50 and 5,290,803

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431,345.50 : 5,290,803 = 5,290,803 : x
2. Step 2: Convert to fraction form
   2,431,345.50/5,290,803 = 5,290,803/x
3. Step 3: Cross multiply
   2,431,345.50x = 5,290,803 × 5,290,803
4. Step 4: Simplify right side
   2,431,345.50x = 27,992,596,384,809
5. Step 5: Solve for x
   x = 27,992,596,384,809/2,431,345.50
6. Step 6: Final answer
   x = 11,513,212.08