Finding the Third Proportional to 322,491 and 753,071.25

Step by Step Solution

1. Step 1: Write the proportion equation
   322,491 : 753,071.25 = 753,071.25 : x
2. Step 2: Convert to fraction form
   322,491/753,071.25 = 753,071.25/x
3. Step 3: Cross multiply
   322,491x = 753,071.25 × 753,071.25
4. Step 4: Simplify right side
   322,491x = 567,116,307,576.56
5. Step 5: Solve for x
   x = 567,116,307,576.56/322,491
6. Step 6: Final answer
   x = 1,758,549.25