Finding the Third Proportional to 482,388 and 709,129.50

Step by Step Solution

1. Step 1: Write the proportion equation
   482,388 : 709,129.50 = 709,129.50 : x
2. Step 2: Convert to fraction form
   482,388/709,129.50 = 709,129.50/x
3. Step 3: Cross multiply
   482,388x = 709,129.50 × 709,129.50
4. Step 4: Simplify right side
   482,388x = 502,864,647,770.25
5. Step 5: Solve for x
   x = 502,864,647,770.25/482,388
6. Step 6: Final answer
   x = 1,042,448.50