Finding the Third Proportional to 527,454 and 817,243.50

Step by Step Solution

1. Step 1: Write the proportion equation
   527,454 : 817,243.50 = 817,243.50 : x
2. Step 2: Convert to fraction form
   527,454/817,243.50 = 817,243.50/x
3. Step 3: Cross multiply
   527,454x = 817,243.50 × 817,243.50
4. Step 4: Simplify right side
   527,454x = 667,886,938,292.25
5. Step 5: Solve for x
   x = 667,886,938,292.25/527,454
6. Step 6: Final answer
   x = 1,266,246.80