Finding the Third Proportional to 4,386,315 and 9,781,185

Step by Step Solution

1. Step 1: Write the proportion equation
   4,386,315 : 9,781,185 = 9,781,185 : x
2. Step 2: Convert to fraction form
   4,386,315/9,781,185 = 9,781,185/x
3. Step 3: Cross multiply
   4,386,315x = 9,781,185 × 9,781,185
4. Step 4: Simplify right side
   4,386,315x = 95,671,580,004,225
5. Step 5: Solve for x
   x = 95,671,580,004,225/4,386,315
6. Step 6: Final answer
   x = 21,811,379.26