Finding the Third Proportional to 77,420.25 and 113,142.38

Step by Step Solution

1. Step 1: Write the proportion equation
   77,420.25 : 113,142.38 = 113,142.38 : x
2. Step 2: Convert to fraction form
   77,420.25/113,142.38 = 113,142.38/x
3. Step 3: Cross multiply
   77,420.25x = 113,142.38 × 113,142.38
4. Step 4: Simplify right side
   77,420.25x = 12,801,197,020.64
5. Step 5: Solve for x
   x = 12,801,197,020.64/77,420.25
6. Step 6: Final answer
   x = 165,346.88