Finding the Third Proportional to 37,140 and 54,890

Step by Step Solution

1. Step 1: Write the proportion equation
   37,140 : 54,890 = 54,890 : x
2. Step 2: Convert to fraction form
   37,140/54,890 = 54,890/x
3. Step 3: Cross multiply
   37,140x = 54,890 × 54,890
4. Step 4: Simplify right side
   37,140x = 3,012,912,100
5. Step 5: Solve for x
   x = 3,012,912,100/37,140
6. Step 6: Final answer
   x = 81,123.10