Finding the Third Proportional to 58,644 and 90,495

Step by Step Solution

1. Step 1: Write the proportion equation
   58,644 : 90,495 = 90,495 : x
2. Step 2: Convert to fraction form
   58,644/90,495 = 90,495/x
3. Step 3: Cross multiply
   58,644x = 90,495 × 90,495
4. Step 4: Simplify right side
   58,644x = 8,189,345,025
5. Step 5: Solve for x
   x = 8,189,345,025/58,644
6. Step 6: Final answer
   x = 139,645.06