Finding the Third Proportional to 64,724,406 and 139,054,116

Step by Step Solution

1. Step 1: Write the proportion equation
   64,724,406 : 139,054,116 = 139,054,116 : x
2. Step 2: Convert to fraction form
   64,724,406/139,054,116 = 139,054,116/x
3. Step 3: Cross multiply
   64,724,406x = 139,054,116 × 139,054,116
4. Step 4: Simplify right side
   64,724,406x = 19,336,047,176,541,456
5. Step 5: Solve for x
   x = 19,336,047,176,541,456/64,724,406
6. Step 6: Final answer
   x = 298,744,297.11