Finding the Third Proportional to 4,211,315 and 8,622,124

Step by Step Solution

1. Step 1: Write the proportion equation
   4,211,315 : 8,622,124 = 8,622,124 : x
2. Step 2: Convert to fraction form
   4,211,315/8,622,124 = 8,622,124/x
3. Step 3: Cross multiply
   4,211,315x = 8,622,124 × 8,622,124
4. Step 4: Simplify right side
   4,211,315x = 74,341,022,271,376
5. Step 5: Solve for x
   x = 74,341,022,271,376/4,211,315
6. Step 6: Final answer
   x = 17,652,686.22