Finding the Third Proportional to 1,368,969 and 2,128,125

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368,969 : 2,128,125 = 2,128,125 : x
2. Step 2: Convert to fraction form
   1,368,969/2,128,125 = 2,128,125/x
3. Step 3: Cross multiply
   1,368,969x = 2,128,125 × 2,128,125
4. Step 4: Simplify right side
   1,368,969x = 4,528,916,015,625
5. Step 5: Solve for x
   x = 4,528,916,015,625/1,368,969
6. Step 6: Final answer
   x = 3,308,267.77