Finding the Third Proportional to 40,531.50 and 64,120.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,531.50 : 64,120.50 = 64,120.50 : x
2. Step 2: Convert to fraction form
   40,531.50/64,120.50 = 64,120.50/x
3. Step 3: Cross multiply
   40,531.50x = 64,120.50 × 64,120.50
4. Step 4: Simplify right side
   40,531.50x = 4,111,438,520.25
5. Step 5: Solve for x
   x = 4,111,438,520.25/40,531.50
6. Step 6: Final answer
   x = 101,438.10