Finding the Third Proportional to 550,281 and 723,616.50

Step by Step Solution

1. Step 1: Write the proportion equation
   550,281 : 723,616.50 = 723,616.50 : x
2. Step 2: Convert to fraction form
   550,281/723,616.50 = 723,616.50/x
3. Step 3: Cross multiply
   550,281x = 723,616.50 × 723,616.50
4. Step 4: Simplify right side
   550,281x = 523,620,839,072.25
5. Step 5: Solve for x
   x = 523,620,839,072.25/550,281
6. Step 6: Final answer
   x = 951,551.73