Finding the Third Proportional to 511,919,499 and 773,259,145.50

Step by Step Solution

1. Step 1: Write the proportion equation
   511,919,499 : 773,259,145.50 = 773,259,145.50 : x
2. Step 2: Convert to fraction form
   511,919,499/773,259,145.50 = 773,259,145.50/x
3. Step 3: Cross multiply
   511,919,499x = 773,259,145.50 × 773,259,145.50
4. Step 4: Simplify right side
   511,919,499x = 597,929,706,099,390,208
5. Step 5: Solve for x
   x = 597,929,706,099,390,208/511,919,499
6. Step 6: Final answer
   x = 1,168,015,102.51