Finding the Third Proportional to 5,558,931,207 and 8,468,647,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,558,931,207 : 8,468,647,429.50 = 8,468,647,429.50 : x
2. Step 2: Convert to fraction form
   5,558,931,207/8,468,647,429.50 = 8,468,647,429.50/x
3. Step 3: Cross multiply
   5,558,931,207x = 8,468,647,429.50 × 8,468,647,429.50
4. Step 4: Simplify right side
   5,558,931,207x = 71,717,989,285,176,958,976
5. Step 5: Solve for x
   x = 71,717,989,285,176,958,976/5,558,931,207
6. Step 6: Final answer
   x = 12,901,398,958.65