Finding the Third Proportional to 64,724,436 and 139,054,176

Step by Step Solution

1. Step 1: Write the proportion equation
   64,724,436 : 139,054,176 = 139,054,176 : x
2. Step 2: Convert to fraction form
   64,724,436/139,054,176 = 139,054,176/x
3. Step 3: Cross multiply
   64,724,436x = 139,054,176 × 139,054,176
4. Step 4: Simplify right side
   64,724,436x = 19,336,063,863,038,976
5. Step 5: Solve for x
   x = 19,336,063,863,038,976/64,724,436
6. Step 6: Final answer
   x = 298,744,416.45