Finding the Third Proportional to 58,117.50 and 81,839.25

Step by Step Solution

1. Step 1: Write the proportion equation
   58,117.50 : 81,839.25 = 81,839.25 : x
2. Step 2: Convert to fraction form
   58,117.50/81,839.25 = 81,839.25/x
3. Step 3: Cross multiply
   58,117.50x = 81,839.25 × 81,839.25
4. Step 4: Simplify right side
   58,117.50x = 6,697,662,840.56
5. Step 5: Solve for x
   x = 6,697,662,840.56/58,117.50
6. Step 6: Final answer
   x = 115,243.48