Finding the Third Proportional to 45,120.38 and 70,142.63

Step by Step Solution

1. Step 1: Write the proportion equation
   45,120.38 : 70,142.63 = 70,142.63 : x
2. Step 2: Convert to fraction form
   45,120.38/70,142.63 = 70,142.63/x
3. Step 3: Cross multiply
   45,120.38x = 70,142.63 × 70,142.63
4. Step 4: Simplify right side
   45,120.38x = 4,919,987,841.89
5. Step 5: Solve for x
   x = 4,919,987,841.89/45,120.38
6. Step 6: Final answer
   x = 109,041.38