Finding the Third Proportional to 2,215,801 and 4,819,827.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215,801 : 4,819,827.50 = 4,819,827.50 : x
2. Step 2: Convert to fraction form
   2,215,801/4,819,827.50 = 4,819,827.50/x
3. Step 3: Cross multiply
   2,215,801x = 4,819,827.50 × 4,819,827.50
4. Step 4: Simplify right side
   2,215,801x = 23,230,737,129,756.25
5. Step 5: Solve for x
   x = 23,230,737,129,756.25/2,215,801
6. Step 6: Final answer
   x = 10,484,126.12