Finding the Third Proportional to 113,560 and 238,890

Step by Step Solution

1. Step 1: Write the proportion equation
   113,560 : 238,890 = 238,890 : x
2. Step 2: Convert to fraction form
   113,560/238,890 = 238,890/x
3. Step 3: Cross multiply
   113,560x = 238,890 × 238,890
4. Step 4: Simplify right side
   113,560x = 57,068,432,100
5. Step 5: Solve for x
   x = 57,068,432,100/113,560
6. Step 6: Final answer
   x = 502,539.91