Finding the Third Proportional to 58,345.50 and 90,518.25

Step by Step Solution

1. Step 1: Write the proportion equation
   58,345.50 : 90,518.25 = 90,518.25 : x
2. Step 2: Convert to fraction form
   58,345.50/90,518.25 = 90,518.25/x
3. Step 3: Cross multiply
   58,345.50x = 90,518.25 × 90,518.25
4. Step 4: Simplify right side
   58,345.50x = 8,193,553,583.06
5. Step 5: Solve for x
   x = 8,193,553,583.06/58,345.50
6. Step 6: Final answer
   x = 140,431.63