Finding the Third Proportional to 811,063,968 and 1,665,124,800

Step by Step Solution

1. Step 1: Write the proportion equation
   811,063,968 : 1,665,124,800 = 1,665,124,800 : x
2. Step 2: Convert to fraction form
   811,063,968/1,665,124,800 = 1,665,124,800/x
3. Step 3: Cross multiply
   811,063,968x = 1,665,124,800 × 1,665,124,800
4. Step 4: Simplify right side
   811,063,968x = 2,772,640,599,575,040,000
5. Step 5: Solve for x
   x = 2,772,640,599,575,040,000/811,063,968
6. Step 6: Final answer
   x = 3,418,522,717.03