Finding the Third Proportional to 294,390,924,460.50 and 640,362,185,236.50

Step by Step Solution

1. Step 1: Write the proportion equation
   294,390,924,460.50 : 640,362,185,236.50 = 640,362,185,236.50 : x
2. Step 2: Convert to fraction form
   294,390,924,460.50/640,362,185,236.50 = 640,362,185,236.50/x
3. Step 3: Cross multiply
   294,390,924,460.50x = 640,362,185,236.50 × 640,362,185,236.50
4. Step 4: Simplify right side
   294,390,924,460.50x = 410,063,728,280,865,521,795,072
5. Step 5: Solve for x
   x = 410,063,728,280,865,521,795,072/294,390,924,460.50
6. Step 6: Final answer
   x = 1,392,922,451,778.52