Finding the Third Proportional to 89,017,828.50 and 189,793,698

Step by Step Solution

1. Step 1: Write the proportion equation
   89,017,828.50 : 189,793,698 = 189,793,698 : x
2. Step 2: Convert to fraction form
   89,017,828.50/189,793,698 = 189,793,698/x
3. Step 3: Cross multiply
   89,017,828.50x = 189,793,698 × 189,793,698
4. Step 4: Simplify right side
   89,017,828.50x = 36,021,647,800,515,204
5. Step 5: Solve for x
   x = 36,021,647,800,515,204/89,017,828.50
6. Step 6: Final answer
   x = 404,656,554.84