Finding the Third Proportional to 516,942 and 1,116,909

Step by Step Solution

1. Step 1: Write the proportion equation
   516,942 : 1,116,909 = 1,116,909 : x
2. Step 2: Convert to fraction form
   516,942/1,116,909 = 1,116,909/x
3. Step 3: Cross multiply
   516,942x = 1,116,909 × 1,116,909
4. Step 4: Simplify right side
   516,942x = 1,247,485,714,281
5. Step 5: Solve for x
   x = 1,247,485,714,281/516,942
6. Step 6: Final answer
   x = 2,413,202.48