Finding the Third Proportional to 552,405 and 836,079.50

Step by Step Solution

1. Step 1: Write the proportion equation
   552,405 : 836,079.50 = 836,079.50 : x
2. Step 2: Convert to fraction form
   552,405/836,079.50 = 836,079.50/x
3. Step 3: Cross multiply
   552,405x = 836,079.50 × 836,079.50
4. Step 4: Simplify right side
   552,405x = 699,028,930,320.25
5. Step 5: Solve for x
   x = 699,028,930,320.25/552,405
6. Step 6: Final answer
   x = 1,265,428.32