Finding the Third Proportional to 3,689,991 and 8,106,426

Step by Step Solution

1. Step 1: Write the proportion equation
   3,689,991 : 8,106,426 = 8,106,426 : x
2. Step 2: Convert to fraction form
   3,689,991/8,106,426 = 8,106,426/x
3. Step 3: Cross multiply
   3,689,991x = 8,106,426 × 8,106,426
4. Step 4: Simplify right side
   3,689,991x = 65,714,142,493,476
5. Step 5: Solve for x
   x = 65,714,142,493,476/3,689,991
6. Step 6: Final answer
   x = 17,808,754.14