Finding the Third Proportional to 17,710 and 38,820

Step by Step Solution

1. Step 1: Write the proportion equation
   17,710 : 38,820 = 38,820 : x
2. Step 2: Convert to fraction form
   17,710/38,820 = 38,820/x
3. Step 3: Cross multiply
   17,710x = 38,820 × 38,820
4. Step 4: Simplify right side
   17,710x = 1,506,992,400
5. Step 5: Solve for x
   x = 1,506,992,400/17,710
6. Step 6: Final answer
   x = 85,092.74