Finding the Third Proportional to 199,085,392 and 414,062,980

Step by Step Solution

1. Step 1: Write the proportion equation
   199,085,392 : 414,062,980 = 414,062,980 : x
2. Step 2: Convert to fraction form
   199,085,392/414,062,980 = 414,062,980/x
3. Step 3: Cross multiply
   199,085,392x = 414,062,980 × 414,062,980
4. Step 4: Simplify right side
   199,085,392x = 171,448,151,406,480,384
5. Step 5: Solve for x
   x = 171,448,151,406,480,384/199,085,392
6. Step 6: Final answer
   x = 861,178,962.88