Finding the Third Proportional to 543,726 and 836,113.50

Step by Step Solution

1. Step 1: Write the proportion equation
   543,726 : 836,113.50 = 836,113.50 : x
2. Step 2: Convert to fraction form
   543,726/836,113.50 = 836,113.50/x
3. Step 3: Cross multiply
   543,726x = 836,113.50 × 836,113.50
4. Step 4: Simplify right side
   543,726x = 699,085,784,882.25
5. Step 5: Solve for x
   x = 699,085,784,882.25/543,726
6. Step 6: Final answer
   x = 1,285,731.76