Finding the Third Proportional to 11,326,401 and 16,990,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,326,401 : 16,990,789.50 = 16,990,789.50 : x
2. Step 2: Convert to fraction form
   11,326,401/16,990,789.50 = 16,990,789.50/x
3. Step 3: Cross multiply
   11,326,401x = 16,990,789.50 × 16,990,789.50
4. Step 4: Simplify right side
   11,326,401x = 288,686,927,833,310.25
5. Step 5: Solve for x
   x = 288,686,927,833,310.25/11,326,401
6. Step 6: Final answer
   x = 25,487,966.37