Finding the Third Proportional to 58,059 and 89,731

Step by Step Solution

1. Step 1: Write the proportion equation
   58,059 : 89,731 = 89,731 : x
2. Step 2: Convert to fraction form
   58,059/89,731 = 89,731/x
3. Step 3: Cross multiply
   58,059x = 89,731 × 89,731
4. Step 4: Simplify right side
   58,059x = 8,051,652,361
5. Step 5: Solve for x
   x = 8,051,652,361/58,059
6. Step 6: Final answer
   x = 138,680.52