Finding the Third Proportional to 4,207,251 and 9,215,354

Step by Step Solution

1. Step 1: Write the proportion equation
   4,207,251 : 9,215,354 = 9,215,354 : x
2. Step 2: Convert to fraction form
   4,207,251/9,215,354 = 9,215,354/x
3. Step 3: Cross multiply
   4,207,251x = 9,215,354 × 9,215,354
4. Step 4: Simplify right side
   4,207,251x = 84,922,749,345,316
5. Step 5: Solve for x
   x = 84,922,749,345,316/4,207,251
6. Step 6: Final answer
   x = 20,184,854.52