Finding the Third Proportional to 58,920 and 89,236

Step by Step Solution

1. Step 1: Write the proportion equation
   58,920 : 89,236 = 89,236 : x
2. Step 2: Convert to fraction form
   58,920/89,236 = 89,236/x
3. Step 3: Cross multiply
   58,920x = 89,236 × 89,236
4. Step 4: Simplify right side
   58,920x = 7,963,063,696
5. Step 5: Solve for x
   x = 7,963,063,696/58,920
6. Step 6: Final answer
   x = 135,150.44