Finding the Third Proportional to 646,598 and 1,405,102

Step by Step Solution

1. Step 1: Write the proportion equation
   646,598 : 1,405,102 = 1,405,102 : x
2. Step 2: Convert to fraction form
   646,598/1,405,102 = 1,405,102/x
3. Step 3: Cross multiply
   646,598x = 1,405,102 × 1,405,102
4. Step 4: Simplify right side
   646,598x = 1,974,311,630,404
5. Step 5: Solve for x
   x = 1,974,311,630,404/646,598
6. Step 6: Final answer
   x = 3,053,383.45