Finding the Third Proportional to 516,499 and 1,115,990

Step by Step Solution

1. Step 1: Write the proportion equation
   516,499 : 1,115,990 = 1,115,990 : x
2. Step 2: Convert to fraction form
   516,499/1,115,990 = 1,115,990/x
3. Step 3: Cross multiply
   516,499x = 1,115,990 × 1,115,990
4. Step 4: Simplify right side
   516,499x = 1,245,433,680,100
5. Step 5: Solve for x
   x = 1,245,433,680,100/516,499
6. Step 6: Final answer
   x = 2,411,299.31