Finding the Third Proportional to 58,856.50 and 89,644.75

Step by Step Solution

1. Step 1: Write the proportion equation
   58,856.50 : 89,644.75 = 89,644.75 : x
2. Step 2: Convert to fraction form
   58,856.50/89,644.75 = 89,644.75/x
3. Step 3: Cross multiply
   58,856.50x = 89,644.75 × 89,644.75
4. Step 4: Simplify right side
   58,856.50x = 8,036,181,202.56
5. Step 5: Solve for x
   x = 8,036,181,202.56/58,856.50
6. Step 6: Final answer
   x = 136,538.55