Finding the Third Proportional to 102,342,672 and 221,691,456

Step by Step Solution

1. Step 1: Write the proportion equation
   102,342,672 : 221,691,456 = 221,691,456 : x
2. Step 2: Convert to fraction form
   102,342,672/221,691,456 = 221,691,456/x
3. Step 3: Cross multiply
   102,342,672x = 221,691,456 × 221,691,456
4. Step 4: Simplify right side
   102,342,672x = 49,147,101,663,399,936
5. Step 5: Solve for x
   x = 49,147,101,663,399,936/102,342,672
6. Step 6: Final answer
   x = 480,221,013.41