Finding the Third Proportional to 645,988,128 and 1,417,040,952

Step by Step Solution

1. Step 1: Write the proportion equation
   645,988,128 : 1,417,040,952 = 1,417,040,952 : x
2. Step 2: Convert to fraction form
   645,988,128/1,417,040,952 = 1,417,040,952/x
3. Step 3: Cross multiply
   645,988,128x = 1,417,040,952 × 1,417,040,952
4. Step 4: Simplify right side
   645,988,128x = 2,008,005,059,645,066,240
5. Step 5: Solve for x
   x = 2,008,005,059,645,066,240/645,988,128
6. Step 6: Final answer
   x = 3,108,424,091.11