Finding the Third Proportional to 260,018.50 and 540,448.50

Step by Step Solution

1. Step 1: Write the proportion equation
   260,018.50 : 540,448.50 = 540,448.50 : x
2. Step 2: Convert to fraction form
   260,018.50/540,448.50 = 540,448.50/x
3. Step 3: Cross multiply
   260,018.50x = 540,448.50 × 540,448.50
4. Step 4: Simplify right side
   260,018.50x = 292,084,581,152.25
5. Step 5: Solve for x
   x = 292,084,581,152.25/260,018.50
6. Step 6: Final answer
   x = 1,123,322.31