Finding the Third Proportional to 1,289,296 and 2,807,984

Step by Step Solution

1. Step 1: Write the proportion equation
   1,289,296 : 2,807,984 = 2,807,984 : x
2. Step 2: Convert to fraction form
   1,289,296/2,807,984 = 2,807,984/x
3. Step 3: Cross multiply
   1,289,296x = 2,807,984 × 2,807,984
4. Step 4: Simplify right side
   1,289,296x = 7,884,774,144,256
5. Step 5: Solve for x
   x = 7,884,774,144,256/1,289,296
6. Step 6: Final answer
   x = 6,115,565.51