Finding the Third Proportional to 518,988 and 1,140,213

Step by Step Solution

1. Step 1: Write the proportion equation
   518,988 : 1,140,213 = 1,140,213 : x
2. Step 2: Convert to fraction form
   518,988/1,140,213 = 1,140,213/x
3. Step 3: Cross multiply
   518,988x = 1,140,213 × 1,140,213
4. Step 4: Simplify right side
   518,988x = 1,300,085,685,369
5. Step 5: Solve for x
   x = 1,300,085,685,369/518,988
6. Step 6: Final answer
   x = 2,505,039.97