Finding the Third Proportional to 120,660 and 265,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   120,660 : 265,012.50 = 265,012.50 : x
2. Step 2: Convert to fraction form
   120,660/265,012.50 = 265,012.50/x
3. Step 3: Cross multiply
   120,660x = 265,012.50 × 265,012.50
4. Step 4: Simplify right side
   120,660x = 70,231,625,156.25
5. Step 5: Solve for x
   x = 70,231,625,156.25/120,660
6. Step 6: Final answer
   x = 582,062.20