Finding the Third Proportional to 4,152,408 and 9,009,840

Step by Step Solution

1. Step 1: Write the proportion equation
   4,152,408 : 9,009,840 = 9,009,840 : x
2. Step 2: Convert to fraction form
   4,152,408/9,009,840 = 9,009,840/x
3. Step 3: Cross multiply
   4,152,408x = 9,009,840 × 9,009,840
4. Step 4: Simplify right side
   4,152,408x = 81,177,216,825,600
5. Step 5: Solve for x
   x = 81,177,216,825,600/4,152,408
6. Step 6: Final answer
   x = 19,549,431.76