Finding the Third Proportional to 39,917 and 55,501.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,917 : 55,501.50 = 55,501.50 : x
2. Step 2: Convert to fraction form
   39,917/55,501.50 = 55,501.50/x
3. Step 3: Cross multiply
   39,917x = 55,501.50 × 55,501.50
4. Step 4: Simplify right side
   39,917x = 3,080,416,502.25
5. Step 5: Solve for x
   x = 3,080,416,502.25/39,917
6. Step 6: Final answer
   x = 77,170.54