Finding the Third Proportional to 1,997,621 and 4,402,419

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997,621 : 4,402,419 = 4,402,419 : x
2. Step 2: Convert to fraction form
   1,997,621/4,402,419 = 4,402,419/x
3. Step 3: Cross multiply
   1,997,621x = 4,402,419 × 4,402,419
4. Step 4: Simplify right side
   1,997,621x = 19,381,293,051,561
5. Step 5: Solve for x
   x = 19,381,293,051,561/1,997,621
6. Step 6: Final answer
   x = 9,702,187.28