Finding the Third Proportional to 86,405,458 and 188,950,814

Step by Step Solution

1. Step 1: Write the proportion equation
   86,405,458 : 188,950,814 = 188,950,814 : x
2. Step 2: Convert to fraction form
   86,405,458/188,950,814 = 188,950,814/x
3. Step 3: Cross multiply
   86,405,458x = 188,950,814 × 188,950,814
4. Step 4: Simplify right side
   86,405,458x = 35,702,410,111,262,596
5. Step 5: Solve for x
   x = 35,702,410,111,262,596/86,405,458
6. Step 6: Final answer
   x = 413,196,237.11