Finding the Third Proportional to 663,244 and 1,421,123

Step by Step Solution

1. Step 1: Write the proportion equation
   663,244 : 1,421,123 = 1,421,123 : x
2. Step 2: Convert to fraction form
   663,244/1,421,123 = 1,421,123/x
3. Step 3: Cross multiply
   663,244x = 1,421,123 × 1,421,123
4. Step 4: Simplify right side
   663,244x = 2,019,590,581,129
5. Step 5: Solve for x
   x = 2,019,590,581,129/663,244
6. Step 6: Final answer
   x = 3,045,019.00