Finding the Third Proportional to 4,189,228 and 9,124,928

Step by Step Solution

1. Step 1: Write the proportion equation
   4,189,228 : 9,124,928 = 9,124,928 : x
2. Step 2: Convert to fraction form
   4,189,228/9,124,928 = 9,124,928/x
3. Step 3: Cross multiply
   4,189,228x = 9,124,928 × 9,124,928
4. Step 4: Simplify right side
   4,189,228x = 83,264,311,005,184
5. Step 5: Solve for x
   x = 83,264,311,005,184/4,189,228
6. Step 6: Final answer
   x = 19,875,812.68