Finding the Third Proportional to 58,220.25 and 90,175.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,220.25 : 90,175.50 = 90,175.50 : x
2. Step 2: Convert to fraction form
   58,220.25/90,175.50 = 90,175.50/x
3. Step 3: Cross multiply
   58,220.25x = 90,175.50 × 90,175.50
4. Step 4: Simplify right side
   58,220.25x = 8,131,620,800.25
5. Step 5: Solve for x
   x = 8,131,620,800.25/58,220.25
6. Step 6: Final answer
   x = 139,669.97