Finding the Third Proportional to 643,336,929 and 1,404,654,579

Step by Step Solution

1. Step 1: Write the proportion equation
   643,336,929 : 1,404,654,579 = 1,404,654,579 : x
2. Step 2: Convert to fraction form
   643,336,929/1,404,654,579 = 1,404,654,579/x
3. Step 3: Cross multiply
   643,336,929x = 1,404,654,579 × 1,404,654,579
4. Step 4: Simplify right side
   643,336,929x = 1,973,054,486,305,667,328
5. Step 5: Solve for x
   x = 1,973,054,486,305,667,328/643,336,929
6. Step 6: Final answer
   x = 3,066,906,930.67