Finding the Third Proportional to 4,386,330 and 9,781,215

Step by Step Solution

1. Step 1: Write the proportion equation
   4,386,330 : 9,781,215 = 9,781,215 : x
2. Step 2: Convert to fraction form
   4,386,330/9,781,215 = 9,781,215/x
3. Step 3: Cross multiply
   4,386,330x = 9,781,215 × 9,781,215
4. Step 4: Simplify right side
   4,386,330x = 95,672,166,876,225
5. Step 5: Solve for x
   x = 95,672,166,876,225/4,386,330
6. Step 6: Final answer
   x = 21,811,438.46