Finding the Third Proportional to 998,608,389.50 and 2,171,029,907

Step by Step Solution

1. Step 1: Write the proportion equation
   998,608,389.50 : 2,171,029,907 = 2,171,029,907 : x
2. Step 2: Convert to fraction form
   998,608,389.50/2,171,029,907 = 2,171,029,907/x
3. Step 3: Cross multiply
   998,608,389.50x = 2,171,029,907 × 2,171,029,907
4. Step 4: Simplify right side
   998,608,389.50x = 4,713,370,857,088,429,056
5. Step 5: Solve for x
   x = 4,713,370,857,088,429,056/998,608,389.50
6. Step 6: Final answer
   x = 4,719,939,174.00