Finding the Third Proportional to 485,695 and 723,547.50

Step by Step Solution

1. Step 1: Write the proportion equation
   485,695 : 723,547.50 = 723,547.50 : x
2. Step 2: Convert to fraction form
   485,695/723,547.50 = 723,547.50/x
3. Step 3: Cross multiply
   485,695x = 723,547.50 × 723,547.50
4. Step 4: Simplify right side
   485,695x = 523,520,984,756.25
5. Step 5: Solve for x
   x = 523,520,984,756.25/485,695
6. Step 6: Final answer
   x = 1,077,880.12