Finding the Third Proportional to 40,666.50 and 64,759.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,666.50 : 64,759.50 = 64,759.50 : x
2. Step 2: Convert to fraction form
   40,666.50/64,759.50 = 64,759.50/x
3. Step 3: Cross multiply
   40,666.50x = 64,759.50 × 64,759.50
4. Step 4: Simplify right side
   40,666.50x = 4,193,792,840.25
5. Step 5: Solve for x
   x = 4,193,792,840.25/40,666.50
6. Step 6: Final answer
   x = 103,126.48