Finding the Third Proportional to 1,808,128 and 2,656,128

Step by Step Solution

1. Step 1: Write the proportion equation
   1,808,128 : 2,656,128 = 2,656,128 : x
2. Step 2: Convert to fraction form
   1,808,128/2,656,128 = 2,656,128/x
3. Step 3: Cross multiply
   1,808,128x = 2,656,128 × 2,656,128
4. Step 4: Simplify right side
   1,808,128x = 7,055,015,952,384
5. Step 5: Solve for x
   x = 7,055,015,952,384/1,808,128
6. Step 6: Final answer
   x = 3,901,834.36