Finding the Third Proportional to 31,158 and 43,719.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,158 : 43,719.75 = 43,719.75 : x
2. Step 2: Convert to fraction form
   31,158/43,719.75 = 43,719.75/x
3. Step 3: Cross multiply
   31,158x = 43,719.75 × 43,719.75
4. Step 4: Simplify right side
   31,158x = 1,911,416,540.06
5. Step 5: Solve for x
   x = 1,911,416,540.06/31,158
6. Step 6: Final answer
   x = 61,345.93