Finding the Third Proportional to 58,186.50 and 89,854.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,186.50 : 89,854.50 = 89,854.50 : x
2. Step 2: Convert to fraction form
   58,186.50/89,854.50 = 89,854.50/x
3. Step 3: Cross multiply
   58,186.50x = 89,854.50 × 89,854.50
4. Step 4: Simplify right side
   58,186.50x = 8,073,831,170.25
5. Step 5: Solve for x
   x = 8,073,831,170.25/58,186.50
6. Step 6: Final answer
   x = 138,757.81