Finding the Third Proportional to 15,403 and 32,415.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,403 : 32,415.50 = 32,415.50 : x
2. Step 2: Convert to fraction form
   15,403/32,415.50 = 32,415.50/x
3. Step 3: Cross multiply
   15,403x = 32,415.50 × 32,415.50
4. Step 4: Simplify right side
   15,403x = 1,050,764,640.25
5. Step 5: Solve for x
   x = 1,050,764,640.25/15,403
6. Step 6: Final answer
   x = 68,218.18