Finding the Third Proportional to 35,128.69 and 49,351.78

Step by Step Solution

1. Step 1: Write the proportion equation
   35,128.69 : 49,351.78 = 49,351.78 : x
2. Step 2: Convert to fraction form
   35,128.69/49,351.78 = 49,351.78/x
3. Step 3: Cross multiply
   35,128.69x = 49,351.78 × 49,351.78
4. Step 4: Simplify right side
   35,128.69x = 2,435,598,312.55
5. Step 5: Solve for x
   x = 2,435,598,312.55/35,128.69
6. Step 6: Final answer
   x = 69,333.60