Finding the Third Proportional to 39,910 and 53,254.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,910 : 53,254.75 = 53,254.75 : x
2. Step 2: Convert to fraction form
   39,910/53,254.75 = 53,254.75/x
3. Step 3: Cross multiply
   39,910x = 53,254.75 × 53,254.75
4. Step 4: Simplify right side
   39,910x = 2,836,068,397.56
5. Step 5: Solve for x
   x = 2,836,068,397.56/39,910
6. Step 6: Final answer
   x = 71,061.60