Finding the Third Proportional to 58,958 and 90,160

Step by Step Solution

1. Step 1: Write the proportion equation
   58,958 : 90,160 = 90,160 : x
2. Step 2: Convert to fraction form
   58,958/90,160 = 90,160/x
3. Step 3: Cross multiply
   58,958x = 90,160 × 90,160
4. Step 4: Simplify right side
   58,958x = 8,128,825,600
5. Step 5: Solve for x
   x = 8,128,825,600/58,958
6. Step 6: Final answer
   x = 137,874.85