Finding the Third Proportional to 3,534,478,538 and 5,271,067,221

Step by Step Solution

1. Step 1: Write the proportion equation
   3,534,478,538 : 5,271,067,221 = 5,271,067,221 : x
2. Step 2: Convert to fraction form
   3,534,478,538/5,271,067,221 = 5,271,067,221/x
3. Step 3: Cross multiply
   3,534,478,538x = 5,271,067,221 × 5,271,067,221
4. Step 4: Simplify right side
   3,534,478,538x = 27,784,149,648,300,662,784
5. Step 5: Solve for x
   x = 27,784,149,648,300,662,784/3,534,478,538
6. Step 6: Final answer
   x = 7,860,890,750.81