Finding the Third Proportional to 1,071,242 and 1,421,697

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071,242 : 1,421,697 = 1,421,697 : x
2. Step 2: Convert to fraction form
   1,071,242/1,421,697 = 1,421,697/x
3. Step 3: Cross multiply
   1,071,242x = 1,421,697 × 1,421,697
4. Step 4: Simplify right side
   1,071,242x = 2,021,222,359,809
5. Step 5: Solve for x
   x = 2,021,222,359,809/1,071,242
6. Step 6: Final answer
   x = 1,886,802.76