Finding the Third Proportional to 72,738 and 112,890

Step by Step Solution

1. Step 1: Write the proportion equation
   72,738 : 112,890 = 112,890 : x
2. Step 2: Convert to fraction form
   72,738/112,890 = 112,890/x
3. Step 3: Cross multiply
   72,738x = 112,890 × 112,890
4. Step 4: Simplify right side
   72,738x = 12,744,152,100
5. Step 5: Solve for x
   x = 12,744,152,100/72,738
6. Step 6: Final answer
   x = 175,206.25