Finding the Third Proportional to 39,914.25 and 64,890.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,914.25 : 64,890.75 = 64,890.75 : x
2. Step 2: Convert to fraction form
   39,914.25/64,890.75 = 64,890.75/x
3. Step 3: Cross multiply
   39,914.25x = 64,890.75 × 64,890.75
4. Step 4: Simplify right side
   39,914.25x = 4,210,809,435.56
5. Step 5: Solve for x
   x = 4,210,809,435.56/39,914.25
6. Step 6: Final answer
   x = 105,496.39