Finding the Third Proportional to 817,939.50 and 1,249,052.50

Step by Step Solution

1. Step 1: Write the proportion equation
   817,939.50 : 1,249,052.50 = 1,249,052.50 : x
2. Step 2: Convert to fraction form
   817,939.50/1,249,052.50 = 1,249,052.50/x
3. Step 3: Cross multiply
   817,939.50x = 1,249,052.50 × 1,249,052.50
4. Step 4: Simplify right side
   817,939.50x = 1,560,132,147,756.25
5. Step 5: Solve for x
   x = 1,560,132,147,756.25/817,939.50
6. Step 6: Final answer
   x = 1,907,393.09