Finding the Third Proportional to 3,788,478 and 8,310,360

Step by Step Solution

1. Step 1: Write the proportion equation
   3,788,478 : 8,310,360 = 8,310,360 : x
2. Step 2: Convert to fraction form
   3,788,478/8,310,360 = 8,310,360/x
3. Step 3: Cross multiply
   3,788,478x = 8,310,360 × 8,310,360
4. Step 4: Simplify right side
   3,788,478x = 69,062,083,329,600
5. Step 5: Solve for x
   x = 69,062,083,329,600/3,788,478
6. Step 6: Final answer
   x = 18,229,506.24