Finding the Third Proportional to 4,009,394 and 8,412,448

Step by Step Solution

1. Step 1: Write the proportion equation
   4,009,394 : 8,412,448 = 8,412,448 : x
2. Step 2: Convert to fraction form
   4,009,394/8,412,448 = 8,412,448/x
3. Step 3: Cross multiply
   4,009,394x = 8,412,448 × 8,412,448
4. Step 4: Simplify right side
   4,009,394x = 70,769,281,352,704
5. Step 5: Solve for x
   x = 70,769,281,352,704/4,009,394
6. Step 6: Final answer
   x = 17,650,867.28