Finding the Third Proportional to 815,880 and 1,146,909

Step by Step Solution

1. Step 1: Write the proportion equation
   815,880 : 1,146,909 = 1,146,909 : x
2. Step 2: Convert to fraction form
   815,880/1,146,909 = 1,146,909/x
3. Step 3: Cross multiply
   815,880x = 1,146,909 × 1,146,909
4. Step 4: Simplify right side
   815,880x = 1,315,400,254,281
5. Step 5: Solve for x
   x = 1,315,400,254,281/815,880
6. Step 6: Final answer
   x = 1,612,247.21