Finding the Third Proportional to 1,189,328 and 2,565,280

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189,328 : 2,565,280 = 2,565,280 : x
2. Step 2: Convert to fraction form
   1,189,328/2,565,280 = 2,565,280/x
3. Step 3: Cross multiply
   1,189,328x = 2,565,280 × 2,565,280
4. Step 4: Simplify right side
   1,189,328x = 6,580,661,478,400
5. Step 5: Solve for x
   x = 6,580,661,478,400/1,189,328
6. Step 6: Final answer
   x = 5,533,092.20