Finding the Third Proportional to 639,215,170,971 and 1,390,957,959,522

Step by Step Solution

1. Step 1: Write the proportion equation
   639,215,170,971 : 1,390,957,959,522 = 1,390,957,959,522 : x
2. Step 2: Convert to fraction form
   639,215,170,971/1,390,957,959,522 = 1,390,957,959,522/x
3. Step 3: Cross multiply
   639,215,170,971x = 1,390,957,959,522 × 1,390,957,959,522
4. Step 4: Simplify right side
   639,215,170,971x = 1,934,764,045,157,605,669,076,992
5. Step 5: Solve for x
   x = 1,934,764,045,157,605,669,076,992/639,215,170,971
6. Step 6: Final answer
   x = 3,026,780,547,493.27