Finding the Third Proportional to 9,819,506 and 21,338,720

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819,506 : 21,338,720 = 21,338,720 : x
2. Step 2: Convert to fraction form
   9,819,506/21,338,720 = 21,338,720/x
3. Step 3: Cross multiply
   9,819,506x = 21,338,720 × 21,338,720
4. Step 4: Simplify right side
   9,819,506x = 455,340,971,238,400
5. Step 5: Solve for x
   x = 455,340,971,238,400/9,819,506
6. Step 6: Final answer
   x = 46,371,067.06