Finding the Third Proportional to 38,708.72 and 54,510.47

Step by Step Solution

1. Step 1: Write the proportion equation
   38,708.72 : 54,510.47 = 54,510.47 : x
2. Step 2: Convert to fraction form
   38,708.72/54,510.47 = 54,510.47/x
3. Step 3: Cross multiply
   38,708.72x = 54,510.47 × 54,510.47
4. Step 4: Simplify right side
   38,708.72x = 2,971,391,203.34
5. Step 5: Solve for x
   x = 2,971,391,203.34/38,708.72
6. Step 6: Final answer
   x = 76,762.84