Finding the Third Proportional to 1,188,218 and 2,565,830

Step by Step Solution

1. Step 1: Write the proportion equation
   1,188,218 : 2,565,830 = 2,565,830 : x
2. Step 2: Convert to fraction form
   1,188,218/2,565,830 = 2,565,830/x
3. Step 3: Cross multiply
   1,188,218x = 2,565,830 × 2,565,830
4. Step 4: Simplify right side
   1,188,218x = 6,583,483,588,900
5. Step 5: Solve for x
   x = 6,583,483,588,900/1,188,218
6. Step 6: Final answer
   x = 5,540,636.14