Finding the Third Proportional to 42,340 and 58,110

Step by Step Solution

1. Step 1: Write the proportion equation
   42,340 : 58,110 = 58,110 : x
2. Step 2: Convert to fraction form
   42,340/58,110 = 58,110/x
3. Step 3: Cross multiply
   42,340x = 58,110 × 58,110
4. Step 4: Simplify right side
   42,340x = 3,376,772,100
5. Step 5: Solve for x
   x = 3,376,772,100/42,340
6. Step 6: Final answer
   x = 79,753.71