Finding the Third Proportional to 811,858 and 1,153,940

Step by Step Solution

1. Step 1: Write the proportion equation
   811,858 : 1,153,940 = 1,153,940 : x
2. Step 2: Convert to fraction form
   811,858/1,153,940 = 1,153,940/x
3. Step 3: Cross multiply
   811,858x = 1,153,940 × 1,153,940
4. Step 4: Simplify right side
   811,858x = 1,331,577,523,600
5. Step 5: Solve for x
   x = 1,331,577,523,600/811,858
6. Step 6: Final answer
   x = 1,640,160.62