Finding the Third Proportional to 112,989 and 245,418

Step by Step Solution

1. Step 1: Write the proportion equation
   112,989 : 245,418 = 245,418 : x
2. Step 2: Convert to fraction form
   112,989/245,418 = 245,418/x
3. Step 3: Cross multiply
   112,989x = 245,418 × 245,418
4. Step 4: Simplify right side
   112,989x = 60,229,994,724
5. Step 5: Solve for x
   x = 60,229,994,724/112,989
6. Step 6: Final answer
   x = 533,060.69