Finding the Third Proportional to 518,922 and 1,128,721.50

Step by Step Solution

1. Step 1: Write the proportion equation
   518,922 : 1,128,721.50 = 1,128,721.50 : x
2. Step 2: Convert to fraction form
   518,922/1,128,721.50 = 1,128,721.50/x
3. Step 3: Cross multiply
   518,922x = 1,128,721.50 × 1,128,721.50
4. Step 4: Simplify right side
   518,922x = 1,274,012,224,562.25
5. Step 5: Solve for x
   x = 1,274,012,224,562.25/518,922
6. Step 6: Final answer
   x = 2,455,113.15