Finding the Third Proportional to 4,207,264 and 9,215,396

Step by Step Solution

1. Step 1: Write the proportion equation
   4,207,264 : 9,215,396 = 9,215,396 : x
2. Step 2: Convert to fraction form
   4,207,264/9,215,396 = 9,215,396/x
3. Step 3: Cross multiply
   4,207,264x = 9,215,396 × 9,215,396
4. Step 4: Simplify right side
   4,207,264x = 84,923,523,436,816
5. Step 5: Solve for x
   x = 84,923,523,436,816/4,207,264
6. Step 6: Final answer
   x = 20,184,976.14