Finding the Third Proportional to 1,421,570 and 3,355,817

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421,570 : 3,355,817 = 3,355,817 : x
2. Step 2: Convert to fraction form
   1,421,570/3,355,817 = 3,355,817/x
3. Step 3: Cross multiply
   1,421,570x = 3,355,817 × 3,355,817
4. Step 4: Simplify right side
   1,421,570x = 11,261,507,737,489
5. Step 5: Solve for x
   x = 11,261,507,737,489/1,421,570
6. Step 6: Final answer
   x = 7,921,880.55