Finding the Third Proportional to 65,003.45 and 103,143.53

Step by Step Solution

1. Step 1: Write the proportion equation
   65,003.45 : 103,143.53 = 103,143.53 : x
2. Step 2: Convert to fraction form
   65,003.45/103,143.53 = 103,143.53/x
3. Step 3: Cross multiply
   65,003.45x = 103,143.53 × 103,143.53
4. Step 4: Simplify right side
   65,003.45x = 10,638,588,441.62
5. Step 5: Solve for x
   x = 10,638,588,441.62/65,003.45
6. Step 6: Final answer
   x = 163,661.91