Finding the Third Proportional to 619,866 and 908,563.50

Step by Step Solution

1. Step 1: Write the proportion equation
   619,866 : 908,563.50 = 908,563.50 : x
2. Step 2: Convert to fraction form
   619,866/908,563.50 = 908,563.50/x
3. Step 3: Cross multiply
   619,866x = 908,563.50 × 908,563.50
4. Step 4: Simplify right side
   619,866x = 825,487,633,532.25
5. Step 5: Solve for x
   x = 825,487,633,532.25/619,866
6. Step 6: Final answer
   x = 1,331,719.49