Finding the Third Proportional to 58,321.50 and 90,058.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,321.50 : 90,058.50 = 90,058.50 : x
2. Step 2: Convert to fraction form
   58,321.50/90,058.50 = 90,058.50/x
3. Step 3: Cross multiply
   58,321.50x = 90,058.50 × 90,058.50
4. Step 4: Simplify right side
   58,321.50x = 8,110,533,422.25
5. Step 5: Solve for x
   x = 8,110,533,422.25/58,321.50
6. Step 6: Final answer
   x = 139,065.93