Finding the Third Proportional to 43,158 and 58,310

Step by Step Solution

1. Step 1: Write the proportion equation
   43,158 : 58,310 = 58,310 : x
2. Step 2: Convert to fraction form
   43,158/58,310 = 58,310/x
3. Step 3: Cross multiply
   43,158x = 58,310 × 58,310
4. Step 4: Simplify right side
   43,158x = 3,400,056,100
5. Step 5: Solve for x
   x = 3,400,056,100/43,158
6. Step 6: Final answer
   x = 78,781.60