Finding the Third Proportional to 3,973,263 and 8,581,606

Step by Step Solution

1. Step 1: Write the proportion equation
   3,973,263 : 8,581,606 = 8,581,606 : x
2. Step 2: Convert to fraction form
   3,973,263/8,581,606 = 8,581,606/x
3. Step 3: Cross multiply
   3,973,263x = 8,581,606 × 8,581,606
4. Step 4: Simplify right side
   3,973,263x = 73,643,961,539,236
5. Step 5: Solve for x
   x = 73,643,961,539,236/3,973,263
6. Step 6: Final answer
   x = 18,534,882.17