Finding the Third Proportional to 4,207,260 and 9,215,370

Step by Step Solution

1. Step 1: Write the proportion equation
   4,207,260 : 9,215,370 = 9,215,370 : x
2. Step 2: Convert to fraction form
   4,207,260/9,215,370 = 9,215,370/x
3. Step 3: Cross multiply
   4,207,260x = 9,215,370 × 9,215,370
4. Step 4: Simplify right side
   4,207,260x = 84,923,044,236,900
5. Step 5: Solve for x
   x = 84,923,044,236,900/4,207,260
6. Step 6: Final answer
   x = 20,184,881.43