Finding the Third Proportional to 10,215,612 and 21,676,518

Step by Step Solution

1. Step 1: Write the proportion equation
   10,215,612 : 21,676,518 = 21,676,518 : x
2. Step 2: Convert to fraction form
   10,215,612/21,676,518 = 21,676,518/x
3. Step 3: Cross multiply
   10,215,612x = 21,676,518 × 21,676,518
4. Step 4: Simplify right side
   10,215,612x = 469,871,432,604,324
5. Step 5: Solve for x
   x = 469,871,432,604,324/10,215,612
6. Step 6: Final answer
   x = 45,995,426.67