Finding the Third Proportional to 9,772,424 and 21,059,521

Step by Step Solution

1. Step 1: Write the proportion equation
   9,772,424 : 21,059,521 = 21,059,521 : x
2. Step 2: Convert to fraction form
   9,772,424/21,059,521 = 21,059,521/x
3. Step 3: Cross multiply
   9,772,424x = 21,059,521 × 21,059,521
4. Step 4: Simplify right side
   9,772,424x = 443,503,424,749,441
5. Step 5: Solve for x
   x = 443,503,424,749,441/9,772,424
6. Step 6: Final answer
   x = 45,383,154.14