Finding the Third Proportional to 39,415.50 and 53,105.63

Step by Step Solution

1. Step 1: Write the proportion equation
   39,415.50 : 53,105.63 = 53,105.63 : x
2. Step 2: Convert to fraction form
   39,415.50/53,105.63 = 53,105.63/x
3. Step 3: Cross multiply
   39,415.50x = 53,105.63 × 53,105.63
4. Step 4: Simplify right side
   39,415.50x = 2,820,207,406.64
5. Step 5: Solve for x
   x = 2,820,207,406.64/39,415.50
6. Step 6: Final answer
   x = 71,550.72