Finding the Third Proportional to 258,124.50 and 607,299

Step by Step Solution

1. Step 1: Write the proportion equation
   258,124.50 : 607,299 = 607,299 : x
2. Step 2: Convert to fraction form
   258,124.50/607,299 = 607,299/x
3. Step 3: Cross multiply
   258,124.50x = 607,299 × 607,299
4. Step 4: Simplify right side
   258,124.50x = 368,812,075,401
5. Step 5: Solve for x
   x = 368,812,075,401/258,124.50
6. Step 6: Final answer
   x = 1,428,814.68