Finding the Third Proportional to 4,322,388 and 9,315,132

Step by Step Solution

1. Step 1: Write the proportion equation
   4,322,388 : 9,315,132 = 9,315,132 : x
2. Step 2: Convert to fraction form
   4,322,388/9,315,132 = 9,315,132/x
3. Step 3: Cross multiply
   4,322,388x = 9,315,132 × 9,315,132
4. Step 4: Simplify right side
   4,322,388x = 86,771,684,177,424
5. Step 5: Solve for x
   x = 86,771,684,177,424/4,322,388
6. Step 6: Final answer
   x = 20,074,941.02