Finding the Third Proportional to 58,678 and 88,290

Step by Step Solution

1. Step 1: Write the proportion equation
   58,678 : 88,290 = 88,290 : x
2. Step 2: Convert to fraction form
   58,678/88,290 = 88,290/x
3. Step 3: Cross multiply
   58,678x = 88,290 × 88,290
4. Step 4: Simplify right side
   58,678x = 7,795,124,100
5. Step 5: Solve for x
   x = 7,795,124,100/58,678
6. Step 6: Final answer
   x = 132,845.77