Finding the Third Proportional to 31,290 and 48,030

Step by Step Solution

1. Step 1: Write the proportion equation
   31,290 : 48,030 = 48,030 : x
2. Step 2: Convert to fraction form
   31,290/48,030 = 48,030/x
3. Step 3: Cross multiply
   31,290x = 48,030 × 48,030
4. Step 4: Simplify right side
   31,290x = 2,306,880,900
5. Step 5: Solve for x
   x = 2,306,880,900/31,290
6. Step 6: Final answer
   x = 73,725.82