Finding the Third Proportional to 3,994,561 and 8,736,428

Step by Step Solution

1. Step 1: Write the proportion equation
   3,994,561 : 8,736,428 = 8,736,428 : x
2. Step 2: Convert to fraction form
   3,994,561/8,736,428 = 8,736,428/x
3. Step 3: Cross multiply
   3,994,561x = 8,736,428 × 8,736,428
4. Step 4: Simplify right side
   3,994,561x = 76,325,174,199,184
5. Step 5: Solve for x
   x = 76,325,174,199,184/3,994,561
6. Step 6: Final answer
   x = 19,107,274.67