Finding the Third Proportional to 58,280 and 89,116

Step by Step Solution

1. Step 1: Write the proportion equation
   58,280 : 89,116 = 89,116 : x
2. Step 2: Convert to fraction form
   58,280/89,116 = 89,116/x
3. Step 3: Cross multiply
   58,280x = 89,116 × 89,116
4. Step 4: Simplify right side
   58,280x = 7,941,661,456
5. Step 5: Solve for x
   x = 7,941,661,456/58,280
6. Step 6: Final answer
   x = 136,267.36