Finding the Third Proportional to 39,866.75 and 64,235.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,866.75 : 64,235.50 = 64,235.50 : x
2. Step 2: Convert to fraction form
   39,866.75/64,235.50 = 64,235.50/x
3. Step 3: Cross multiply
   39,866.75x = 64,235.50 × 64,235.50
4. Step 4: Simplify right side
   39,866.75x = 4,126,199,460.25
5. Step 5: Solve for x
   x = 4,126,199,460.25/39,866.75
6. Step 6: Final answer
   x = 103,499.77