Finding the Third Proportional to 45,240.75 and 64,921.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,240.75 : 64,921.50 = 64,921.50 : x
2. Step 2: Convert to fraction form
   45,240.75/64,921.50 = 64,921.50/x
3. Step 3: Cross multiply
   45,240.75x = 64,921.50 × 64,921.50
4. Step 4: Simplify right side
   45,240.75x = 4,214,801,162.25
5. Step 5: Solve for x
   x = 4,214,801,162.25/45,240.75
6. Step 6: Final answer
   x = 93,163.82