Finding the Third Proportional to 638,296 and 945,118

Step by Step Solution

1. Step 1: Write the proportion equation
   638,296 : 945,118 = 945,118 : x
2. Step 2: Convert to fraction form
   638,296/945,118 = 945,118/x
3. Step 3: Cross multiply
   638,296x = 945,118 × 945,118
4. Step 4: Simplify right side
   638,296x = 893,248,033,924
5. Step 5: Solve for x
   x = 893,248,033,924/638,296
6. Step 6: Final answer
   x = 1,399,426.02