Finding the Third Proportional to 139,815,996 and 217,085,274

Step by Step Solution

1. Step 1: Write the proportion equation
   139,815,996 : 217,085,274 = 217,085,274 : x
2. Step 2: Convert to fraction form
   139,815,996/217,085,274 = 217,085,274/x
3. Step 3: Cross multiply
   139,815,996x = 217,085,274 × 217,085,274
4. Step 4: Simplify right side
   139,815,996x = 47,126,016,187,655,072
5. Step 5: Solve for x
   x = 47,126,016,187,655,072/139,815,996
6. Step 6: Final answer
   x = 337,057,400.70