Finding the Third Proportional to 721,681.50 and 1,008,953.50

Step by Step Solution

1. Step 1: Write the proportion equation
   721,681.50 : 1,008,953.50 = 1,008,953.50 : x
2. Step 2: Convert to fraction form
   721,681.50/1,008,953.50 = 1,008,953.50/x
3. Step 3: Cross multiply
   721,681.50x = 1,008,953.50 × 1,008,953.50
4. Step 4: Simplify right side
   721,681.50x = 1,017,987,165,162.25
5. Step 5: Solve for x
   x = 1,017,987,165,162.25/721,681.50
6. Step 6: Final answer
   x = 1,410,576.78