Finding the Third Proportional to 621,848 and 1,318,428

Step by Step Solution

1. Step 1: Write the proportion equation
   621,848 : 1,318,428 = 1,318,428 : x
2. Step 2: Convert to fraction form
   621,848/1,318,428 = 1,318,428/x
3. Step 3: Cross multiply
   621,848x = 1,318,428 × 1,318,428
4. Step 4: Simplify right side
   621,848x = 1,738,252,391,184
5. Step 5: Solve for x
   x = 1,738,252,391,184/621,848
6. Step 6: Final answer
   x = 2,795,301.09