Finding the Third Proportional to 4,386,328 and 9,781,208

Step by Step Solution

1. Step 1: Write the proportion equation
   4,386,328 : 9,781,208 = 9,781,208 : x
2. Step 2: Convert to fraction form
   4,386,328/9,781,208 = 9,781,208/x
3. Step 3: Cross multiply
   4,386,328x = 9,781,208 × 9,781,208
4. Step 4: Simplify right side
   4,386,328x = 95,672,029,939,264
5. Step 5: Solve for x
   x = 95,672,029,939,264/4,386,328
6. Step 6: Final answer
   x = 21,811,417.19