Finding the Third Proportional to 643,772 and 1,395,058

Step by Step Solution

1. Step 1: Write the proportion equation
   643,772 : 1,395,058 = 1,395,058 : x
2. Step 2: Convert to fraction form
   643,772/1,395,058 = 1,395,058/x
3. Step 3: Cross multiply
   643,772x = 1,395,058 × 1,395,058
4. Step 4: Simplify right side
   643,772x = 1,946,186,823,364
5. Step 5: Solve for x
   x = 1,946,186,823,364/643,772
6. Step 6: Final answer
   x = 3,023,099.52