Finding the Third Proportional to 1,560,427 and 3,406,621

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560,427 : 3,406,621 = 3,406,621 : x
2. Step 2: Convert to fraction form
   1,560,427/3,406,621 = 3,406,621/x
3. Step 3: Cross multiply
   1,560,427x = 3,406,621 × 3,406,621
4. Step 4: Simplify right side
   1,560,427x = 11,605,066,637,641
5. Step 5: Solve for x
   x = 11,605,066,637,641/1,560,427
6. Step 6: Final answer
   x = 7,437,109.61