Finding the Third Proportional to 611,505 and 926,491.50

Step by Step Solution

1. Step 1: Write the proportion equation
   611,505 : 926,491.50 = 926,491.50 : x
2. Step 2: Convert to fraction form
   611,505/926,491.50 = 926,491.50/x
3. Step 3: Cross multiply
   611,505x = 926,491.50 × 926,491.50
4. Step 4: Simplify right side
   611,505x = 858,386,499,572.25
5. Step 5: Solve for x
   x = 858,386,499,572.25/611,505
6. Step 6: Final answer
   x = 1,403,727.69