Finding the Third Proportional to 356,112 and 510,118

Step by Step Solution

1. Step 1: Write the proportion equation
   356,112 : 510,118 = 510,118 : x
2. Step 2: Convert to fraction form
   356,112/510,118 = 510,118/x
3. Step 3: Cross multiply
   356,112x = 510,118 × 510,118
4. Step 4: Simplify right side
   356,112x = 260,220,373,924
5. Step 5: Solve for x
   x = 260,220,373,924/356,112
6. Step 6: Final answer
   x = 730,726.22