Finding the Third Proportional to 56,450 and 76,890

Step by Step Solution

1. Step 1: Write the proportion equation
   56,450 : 76,890 = 76,890 : x
2. Step 2: Convert to fraction form
   56,450/76,890 = 76,890/x
3. Step 3: Cross multiply
   56,450x = 76,890 × 76,890
4. Step 4: Simplify right side
   56,450x = 5,912,072,100
5. Step 5: Solve for x
   x = 5,912,072,100/56,450
6. Step 6: Final answer
   x = 104,731.13