Finding the Third Proportional to 621,499 and 1,353,707

Step by Step Solution

1. Step 1: Write the proportion equation
   621,499 : 1,353,707 = 1,353,707 : x
2. Step 2: Convert to fraction form
   621,499/1,353,707 = 1,353,707/x
3. Step 3: Cross multiply
   621,499x = 1,353,707 × 1,353,707
4. Step 4: Simplify right side
   621,499x = 1,832,522,641,849
5. Step 5: Solve for x
   x = 1,832,522,641,849/621,499
6. Step 6: Final answer
   x = 2,948,552.84