Finding the Third Proportional to 58,117.50 and 89,805

Step by Step Solution

1. Step 1: Write the proportion equation
   58,117.50 : 89,805 = 89,805 : x
2. Step 2: Convert to fraction form
   58,117.50/89,805 = 89,805/x
3. Step 3: Cross multiply
   58,117.50x = 89,805 × 89,805
4. Step 4: Simplify right side
   58,117.50x = 8,064,938,025
5. Step 5: Solve for x
   x = 8,064,938,025/58,117.50
6. Step 6: Final answer
   x = 138,769.53